Yifei GAO, Qingsong LI, Yi LIN, Qi WANG, Lijun WANG, Tonglu WANG, Guangze GAO, Qinzheng HE, Song HAN, Jieyu LEI, Shuxian QI, Hui JIANG. Research on mid-infrared optical parametric oscillator[J]. Infrared and Laser Engineering, 2024, 53(12): 20240423
- Infrared and Laser Engineering
- Vol. 53, Issue 12, 20240423 (2024)
Fig. 1. Experimental setup of nanosecond fiber pulse laser
Fig. 2. Experimental setup of OPO based on MgO: PPLN
Fig. 3. Different grating period of MgO:PPLN-OPO wavelength tuning range
Fig. 4. Nanosecond fiber laser power after ISO Collimator versus second stage LD power and beam profile
Fig. 5. The diagram of nanosecond fiber laser time domain characteristic
Fig. 6. The diagram of nanosecond fiber laser spectrum
Fig. 7. The diagram of 3817 nm laser power under different output mirror transmittances and the focused spot
Fig. 8. The diagram of 3817 nm laser conversion efficiency under different output mirror transmittances
Fig. 9. The diagram of signal laser time domain characteristic under different output mirror transmittances. (a) HR ; (b) T =10%; (c) T =20%; (d) T =30%
Fig. 10. The diagram of depleted pump laser time domain characteristic under different output mirror transmittances. (a) T =30%; (b) T = HR
Fig. 11. Mid-infrared laser spectrum and corresponding signal laser spectrum
Fig. 12. The diagram of laser power stability at maximum pump power of 3 817 nm
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Table 1. Coating parameters of cavity mirror
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Table 2. Parameter values in Sellmeier equation
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