Dr. YiFei Zhang Profile

Dr. YiFei Zhang

at Xi'an Research Institute of High Technology

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Proceedings Article | 27 April 2005 Paper

Design of diode-pumped solid-state laser applied in laser fuses

FangLin Deng, YiFei Zhang

Proceedings Volume 5707, (2005) https://doi.org/10.1117/12.589662

KEYWORDS: Semiconductor lasers, Laser development, Absorption, Pulsed laser operation, Diode pumped solid state lasers, Q switching, Ranging, Crystals, Chromium, Weapons

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The function of laser fuzes which are parts of certain weapon systems is to control the blasting height of warheads. Commonly the battle environment these weapon systems are confronted with is very complicated and the tactical demand for them is very rigor, so laser fuzes equipped for them must fulfill some special technical requirements, such as high repetition rate, long ranging scope, etc. Lasers are one of key components which constitute fuze systems. Whether designed lasers are advanced and reasonable will determine whether laser fuzes can be applied in these weapon systems or not. So we adopt the novel technology of diode-pumped solid-state laser (DPSSL) to design lasers applied in fuzes. Nd:YVO4 crystal is accepted as gain material, which has wide absorption band and large absorption efficient for 808nm pumping laser. As warhead's temperature is usually very high, wider absorption band is beneficial to reduce the influence of temperature fluctuation. Passive Q-switching with Cr⁴⁺:YAG is used to reduce the power consumption farthest. Design the end-pumped microchip sandwich-architecture to decrease lasers' size and increase the reliability, further it's advantageous to produce short pulses and increase peak power of lasers. The designed DPSSL features small size and weight, high repetition rate and peak power, robustness, etc. The repetition rate is expected to reach 1 kHz; peak power will exceed 300 kW; pulse width is only 5 ns; and divergence angle of laser beams is less than 5 mrad. So DPSSL is suitable for laser fuzes as an emitter.

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