Journals >Chinese Optics Letters
Contents
2015
Volume: 13 Issue 4
20 Article(s)
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Instrumentation, Measurement, and Metrology
Method of evaluation of a mirror surface figure based on frequency domain and its application for the Giant Steerable Science Mirror of the Thirty Meter Telescope
Fei Yang, Guojun Liu, Qichang An, and Xuejun Zhang
We propose a sub-aperture stitching algorithm based on a frequency domain that can be denoted as a power spectral density (PSD). Our algorithm is verified by the experimental data obtained from measuring a Φ1.23 m mirror at the Changchun Institute of Optics, Fine Mechanics and Physics. Then, we apply it to the Great StWe propose a sub-aperture stitching algorithm based on a frequency domain that can be denoted as a power spectral density (PSD). Our algorithm is verified by the experimental data obtained from measuring a Φ1.23 m mirror at the Changchun Institute of Optics, Fine Mechanics and Physics. Then, we apply it to the Great Steering Science Mirror (GSSM) of the Thirty Meter Telescope (TMT) with the simulated data before the preliminary design phase, and obtain a more objective result on the frequency domain aberrations. Therefore, the sub-aperture stitching-based PSD is expected to be useful for specifying a large aperture mirror surface for mirror vendors..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041201 (2015)
Lasers and Laser Optics
Distributed Bragg reflector laser (1.8 μm) with 10 nm wavelength tuning range
Junping Mi, Hongyan Yu, Lijun Yuan, Shiyan Li... and Jiaoqing Pan|Show fewer author(s)
We report a 1.8 μm two-section distributed Bragg reflector laser using butt-jointed InGaAsP bulk material as the waveguide core layer. The threshold current is 17 mA and the output power is 8 mW on average. The threshold current, output power, and emitting wavelength dependences on temperature are measured. The obtaineWe report a 1.8 μm two-section distributed Bragg reflector laser using butt-jointed InGaAsP bulk material as the waveguide core layer. The threshold current is 17 mA and the output power is 8 mW on average. The threshold current, output power, and emitting wavelength dependences on temperature are measured. The obtained wavelength tuning range is 10 nm. This device has potential applications in simultaneous multiple-gas detection..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041401 (2015)
Ethanol-assisted ablation of silicon and germanium by temporally shaped femtosecond pulses
Guangming Zhang, Xin Li, Lan Jiang, Xuesong Shi... and Yongfeng Lu|Show fewer author(s)
A surprising phenomenon can be discovered by using femtosecond double-pulse ablation of silicon and germanium in ethanol. The ablation areas present an oscillation increase phenomenon when the pulse delay increases from 200 fs to 1 ps in the fluence range of 0.5–0.6 J/cm2. In contrast, the ablation areas exhibit an oscA surprising phenomenon can be discovered by using femtosecond double-pulse ablation of silicon and germanium in ethanol. The ablation areas present an oscillation increase phenomenon when the pulse delay increases from 200 fs to 1 ps in the fluence range of 0.5 – 0.6 J / cm 2 F < 0.5 J / cm 2
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041402 (2015)
Loss of time-delay signature in a ring of three unidirectionally coupled semiconductor lasers
Lei Yang, Wei Pan, Lianshan Yan, Bin Luo... and Nianqiang Li|Show fewer author(s)
A ring of three unidirectionally coupled semiconductor lasers (RTUC-SLs) is used to generate broadband chaos with no pronounced time-delay (TD) signature. Using the autocorrelation function and permutation entropy as the TD measures, we demonstrate that under suitable coupling strength, the loss of the TD signature of A ring of three unidirectionally coupled semiconductor lasers (RTUC-SLs) is used to generate broadband chaos with no pronounced time-delay (TD) signature. Using the autocorrelation function and permutation entropy as the TD measures, we demonstrate that under suitable coupling strength, the loss of the TD signature of the lasers in the RTUC-SL configuration is achieved both for the intensity and the phase. These findings should prove valuable for developing high-quality optical chaos for potential applications, such as chaos-based communications and random number generation..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041403 (2015)
Three-channel dual-wavelength fiber laser based on a digital micromirror-device processor and photonic crystal fiber
Tao Wang, Gang Liu, Yin Li, Binbin Yan... and Alameh Kamal|Show fewer author(s)
A stable three-channel dual-wavelength fiber ring laser is proposed and experimentally demonstrated. The digital micromirror-device (DMD) processor can select and recirculate any dual waveband from the gain spectrum of the erbium-doped fiber at each channel. The uniform and stable dual-wavelength oscillation is obtaineA stable three-channel dual-wavelength fiber ring laser is proposed and experimentally demonstrated. The digital micromirror-device (DMD) processor can select and recirculate any dual waveband from the gain spectrum of the erbium-doped fiber at each channel. The uniform and stable dual-wavelength oscillation is obtained by a highly nonlinear photonic crystal fiber, which causes two degenerate the four-wave-mixing processes. By loading different reproducibility diffraction gratings on the optoelectronic DMD processor, the laser can be operated stably in a three-channel dual-wavelength scheme at room temperature. The power fluctuation of each laser channel is less than ～ 0.02 dB
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041404 (2015)
Femtosecond Bessel-beam-assisted high-aspect-ratio microgroove fabrication in fused silica
Liangliang Zhao, Feng Wang, Lan Jiang, Yongfeng Lu... and Xiaowei Li|Show fewer author(s)
A simple and repeatable method to fabricate high-aspect-ratio (HAR) and high-quality microgrooves in silica is reported. The method consists of two steps: (1) formation of laser-modified regions by femtosecond Bessel beam irradiation, and (2) removing laser-modified regions through HF etching. Uniform, straight microgrA simple and repeatable method to fabricate high-aspect-ratio (HAR) and high-quality microgrooves in silica is reported. The method consists of two steps: (1) formation of laser-modified regions by femtosecond Bessel beam irradiation, and (2) removing laser-modified regions through HF etching. Uniform, straight microgrooves can be fabricated and the highest aspect ratio that can be reached is ～ 52
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041405 (2015)
Generation and measurement of complex laser pulse shapes in the SG-III laser facility
Dongxia Hu, Jun Dong, Dangpeng Xu, Xiaoxia Huang... and Wanguo Zheng|Show fewer author(s)
The generation and measurement of complex ultraviolet laser pulse shapes is demonstrated in the SG-III laser facility. Relatively high contrast ratio of 300∶1 required by the physics experiment is achieved and successfully measured. Two continuous main shots validate the reproduction and the stability of the pulse shapThe generation and measurement of complex ultraviolet laser pulse shapes is demonstrated in the SG-III laser facility. Relatively high contrast ratio of 300 ∶ 1
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041406 (2015)
Postprocessing treatments to improve the laser damage resistance of fused silica optical surfaces and SiO2 coatings
Wenwen Liu, Chaoyang Wei, Kui Yi, and Jianda Shao
The combination of deep wet etching and a magneto-rheological finishing (MRF) process is investigated to simultaneously improve laser damage resistance of a fused-silica surface at 355 nm. The subsequently deposited SiO2 coatings are researched to clarify the impact of substrate finishing technology on the coatings. ItThe combination of deep wet etching and a magneto-rheological finishing (MRF) process is investigated to simultaneously improve laser damage resistance of a fused-silica surface at 355 nm. The subsequently deposited SiO 2 SiO 2
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041407 (2015)
Optical Devices
Synthesis and properties of novel blue-emitting materials: anthracene-based derivatives
Gang Shi, Jinguo Wang, Chunlong Xu, Xiaoting Li, and Zhen Wang
Two kinds of novel blue-emitting materials, anthracene-based derivatives, are synthesized by the Suzuki coupling reaction. It is worth noting that the maximum emission wavelengths of the two materials are 441 and 444 nm in tetrahydrofuran and 456 and 454 nm in film states, which are the typical blue fluorescence and thTwo kinds of novel blue-emitting materials, anthracene-based derivatives, are synthesized by the Suzuki coupling reaction. It is worth noting that the maximum emission wavelengths of the two materials are 441 and 444 nm in tetrahydrofuran and 456 and 454 nm in film states, which are the typical blue fluorescence and the fluorescence quantum yields of them are 0.87 and 1.12 by using 9,10-diphenylanthracene ( Φ f = 0.90 )
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 042301 (2015)
Fiber Optics and Optical Communications
Performance analysis of non-line-of-sight ultraviolet communication through turbulence channel
Tao Liu, Peng Wang, and Hongming Zhang
The bit error rate performance of non-line-of-sight ultraviolet communication through atmospheric turbulence is studied. The communication performance degradation under different strengths of turbulence is evaluated. Particularly, under strong turbulence conditions, the communication distance can be shortened by 30%, oThe bit error rate performance of non-line-of-sight ultraviolet communication through atmospheric turbulence is studied. The communication performance degradation under different strengths of turbulence is evaluated. Particularly, under strong turbulence conditions, the communication distance can be shortened by 30%, or at a given distance the communication rate can be reduced by half than the counterpart of no turbulence..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 040601 (2015)
Imaging Systems
Hybrid approach used for extended image-based wavefront sensor-less adaptive optics
Bing Dong, and Ji Yu
The stochastic parallel gradient descent (SPGD) algorithm is widely used in wavefront sensor-less adaptive optics (WSAO) systems. However, the convergence is relatively slow. Modal-based algorithms usually provide much faster convergence than SPGD; however, the limited actuator stroke of the deformable mirror (DM) ofteThe stochastic parallel gradient descent (SPGD) algorithm is widely used in wavefront sensor-less adaptive optics (WSAO) systems. However, the convergence is relatively slow. Modal-based algorithms usually provide much faster convergence than SPGD; however, the limited actuator stroke of the deformable mirror (DM) often prohibits the sensing of higher-order modes or renders a closed-loop correction inapplicable. Based on a comparative analysis of SPGD and the DM-modal-based algorithm, a hybrid approach involving both algorithms is proposed for extended image-based WSAO, and is demonstrated in this experiment. The hybrid approach can achieve similar correction results to pure SPGD, but with a dramatically decreased iteration number..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041101 (2015)
Alignment methods for micron-scale surface defects automatic evaluation of large-aperture fine optics
Pin Cao, Yongying Yang, Chen Li, Huiting Chai... and Dong Liu|Show fewer author(s)
A surface defect evaluation system can combine microscopic scattering dark-field imaging with sub-aperture scanning and stitching. Thousands of sub-apertures are involved; mechanical errors will cause stitching dislocation, leading to defect cracks. In this Letter, we propose standard line coordinate error adjustment dA surface defect evaluation system can combine microscopic scattering dark-field imaging with sub-aperture scanning and stitching. Thousands of sub-apertures are involved; mechanical errors will cause stitching dislocation, leading to defect cracks. In this Letter, we propose standard line coordinate error adjustment dealing with consistency error between coordinates of the scanning and imaging system, and defocus depth estimation leveling method dealing with high-cleanliness fine optics defocuing caused by the surface which is not perpendicular to microscope’s optical axis. Experiments show defect cracks are effectively solved and the defocus of 420 mm × 420 mm
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041102 (2015)
Quantum Optics
Radiative force on atoms from the view of photon emission
Zhuo Song, Yonggang Peng, and Yujun Zheng
In this Letter, we present a possible methodology to directly “read” the force on an atom via the photons emitted from the atom. In this methodology, the mean radiative force on an atom exerted by external fields can be expressed as a function of the average number of emitted photons N and its derivatives via the generIn this Letter, we present a possible methodology to directly “read” the force on an atom via the photons emitted from the atom. In this methodology, the mean radiative force on an atom exerted by external fields can be expressed as a function of the average number of emitted photons N
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 042701 (2015)
Materials
Phase matching characteristics of deuterated ammonium dihydrogen phosphate crystals
Lili Zhu, Baoan Liu, Lisong Zhang, Qinghua Zhang... and Xun Sun|Show fewer author(s)
Refractive indices for crystals ammonium dihydrogen phosphate (ADP), 30% deuterated ADP (DADP), 50% DADP, and 70% DADP are measured from 253 to 1529 nm with 5×10 6 accuracy. Numerical fits to modified double-pole Sellmeier equation are made. Second-harmonic generation, third-harmonic generation phase matching (PM)Refractive indices for crystals ammonium dihydrogen phosphate (ADP), 30% deuterated ADP (DADP), 50% DADP, and 70% DADP are measured from 253 to 1529 nm with 5 × 10 6
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041601 (2015)
Nonlinear Optics
Continuous generation of dissipative spatial solitons in two-dimensional Ginzburg–Landau models with elliptical shaped potentials
Guangyu Jiang, and Youwen Liu
We report on the rich dynamics of two-dimensional fundamental solitons coupled and interacting on the top of an elliptical shaped potential in a two-dimensional Ginzburg–Landau model. Under the elliptical shaped potential, the solitons display unique and dynamic properties, such as the generation of straight-line arrayWe report on the rich dynamics of two-dimensional fundamental solitons coupled and interacting on the top of an elliptical shaped potential in a two-dimensional Ginzburg–Landau model. Under the elliptical shaped potential, the solitons display unique and dynamic properties, such as the generation of straight-line arrays, emission of either one elliptical shaped soliton or several elliptical ring soliton arrays, and soliton decay. When changing the depth and sharpness of the external potential and fixing other parameters of the potential, various scenarios of soliton dynamics are also revealed. These results suggest some possible applications for all-optical data-processing schemes, such as the routing of light signals in optical communication devices..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041901 (2015)
Optical Design and Fabrication
Closed-loop correction and ocular wavefronts compensation of a 62-element silicon unimorph deformable mirror
Jianqiang Ma, Kai Chen, Junjie Chen, Baoqing Li, and Jiaru Chu
Adaptive optics (AO) systems greatly improve the resolution of retinal imaging instruments by actively correcting ocular aberrations. In this Letter, closed-loop correction as well as ocular aberration compensation of a 62-element silicon unimorph deformable mirror (DM) driven by only positive voltage is performed. TheAdaptive optics (AO) systems greatly improve the resolution of retinal imaging instruments by actively correcting ocular aberrations. In this Letter, closed-loop correction as well as ocular aberration compensation of a 62-element silicon unimorph deformable mirror (DM) driven by only positive voltage is performed. The experimental results show that the root-mean square (RMS) wavefront of the initial mirror surface is reduced to 0.011 μm in a closed-loop AO system. The DM reproduces Zernike shapes from the third to 35th mode accurately. The simulated compensation of 200 ocular wavefronts shows that the average RMS value after correction is reduced to 0.017 μm..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 042201 (2015)
Image Processing
Transfer method to calibrate the normalized radiance for a CE318 Sun/sky radiometer
Kaitao Li, Zhengqiang Li, Donghui Li, Wei Li... and Xingfeng Chen|Show fewer author(s)
A transfer method is introduced to derive the normalized radiance for CE318 Sun/sky radiometer using viewing solid angles and extraterrestrial calibration constants. The new transfer method has a good consistency at different parts of the sky scanning. Error analysis suggests that the uncertainty of the transferred metA transfer method is introduced to derive the normalized radiance for CE318 Sun/sky radiometer using viewing solid angles and extraterrestrial calibration constants. The new transfer method has a good consistency at different parts of the sky scanning. Error analysis suggests that the uncertainty of the transferred method is about 2.0%–2.4%. The normalized radiances are used as input of the aerosol inversion to test the performance of the new transfer method. The residuals of the inversion (e.g., difference between fitted and measured radiance) are chosen as the index of the radiance calibration accuracy. Analyses of one year’s measurements in Beijing suggest an average sky residual of 3.3% for almucantar scanning (while 3.7% for the AERONET method), which suggest a better accuracy of the transfer method when used in aerosol retrieval..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 041001 (2015)
Detectors
Period-one characteristic in an optoelectronic delayed feedback semiconductor laser and its application in sensing
Senlin Yan
Nonlinear dynamics in an optoelectronic delayed feedback semiconductor laser and its application in sensing are studied. We analyze the theories of stability and period of the laser. A route to quasi-periodic bifurcation or a stochastic state from stability is numerically analyzed by shifting the feedback level. The inNonlinear dynamics in an optoelectronic delayed feedback semiconductor laser and its application in sensing are studied. We analyze the theories of stability and period of the laser. A route to quasi-periodic bifurcation or a stochastic state from stability is numerically analyzed by shifting the feedback level. The induced dynamics are found to be in one of four distributions (stable, periodic pulsed, period-three pulsed, and undamping oscillating). An external injection into the laser results in the process being more or less the opposite with the conventional optical injection cases. Based on this process or the dynamic regimes, we present a modeling of the incoherent detection sensor using the nonlinear period-one characteristic of the laser. The sensor discriminates the injection light variation as a sensing signal via detecting the behaviors from the period-one laser..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 040401 (2015)
Light source system for high-precision flat-field correction and the calibration of an array detector
Fugui Yang, Qiushi Wang, and Ming Li
Signal distortion due to the non-uniform response of the detector degrades the measurement accuracy of most metrology instruments. In this Letter, we report a newly developed calibration source system for reference-based non-uniformity correction using a laser source, a fiber, and a diffusive module. By applying the MoSignal distortion due to the non-uniform response of the detector degrades the measurement accuracy of most metrology instruments. In this Letter, we report a newly developed calibration source system for reference-based non-uniformity correction using a laser source, a fiber, and a diffusive module. By applying the Monte Carlo simulation, we show that the transmittance of the system highly depends on the cavity reflection of the diffusive module. We also demonstrate the use of this system to achieve a flat field at a very low non-uniformity (less than 0.2%) with proper illumination intensity, which most costly commercial integrating sphere systems traditionally cannot provide..
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 040402 (2015)
Remote Sensing and Sensors
Laboratory demonstration of static-mode down-looking synthetic aperture imaging ladar
Zhiyong Lu, Ning Zhang, Jianfeng Sun, Yu Zhou... and Liren Liu|Show fewer author(s)
A static-mode synthetic aperture imaging ladar (SAIL) in which the target and carrying platform are kept still during the collection process is proposed and demonstrated. A target point of 0.5 mm×0.5 mm and a two-dimensional (2D) object are reconstructed in the experiments, in which an optical collimator with a foA static-mode synthetic aperture imaging ladar (SAIL) in which the target and carrying platform are kept still during the collection process is proposed and demonstrated. A target point of 0.5 mm × 0.5 mm
Chinese Optics Letters
- Publication Date: Apr. 10, 2015
- Vol. 13, Issue 4, 042801 (2015)
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