With the continuous development of medicine, optics, chemistry, communication and other fields, various micro total analysis system, lab-on-a-chip, micro electro mechanical systems and high-precision micro-nano devices began to appear and are gradually used. Most of these systems or structures are realized by preparing three-dimensional micro-nano connected structures in transparent materials by femtosecond laser. Therefore, the main technologies of femtosecond laser preparation of three-dimensi

Non-diffracting beams have attracted attention in recent years due to their unique properties, such as diffraction-free propagation and self-repairing and self-accelerating ability, which make them promising candidates for microscopic imaging applications. Non-diffraction beams can suppress beam diffraction during propagation, thereby improving the imaging resolution. Moreover, their self-healing characteristic facilitates quick wave-front recovery after passing through a strongly scattering med

Laser-induced forward transfer has application prospects in three-dimensional metal microstructure printing. Pulse duration is a critical factor that influences the droplet transfer behavior, but droplet generation and deposition behavior under different pulse durations are unclear at present. In this study, 500 nm copper films were used as the research object to perform a laser-induced forward transfer experiment at five pulse durations. The results show that with an increase in pulse duration,

As an important device for the application of terahertz technology, the terahertz modulator has a wide application prospect in the fields of terahertz communication, imaging, and sensing. However, current terahertz modulators exhibit problems, such as low modulation depth, narrow operating bandwidth, and poor stability. This restricts further promotion and development of terahertz technology. In this study, a new optical control GaAs/side-polished terahertz fiber (SPTF) modulator is demonstrated