LD-pumped Nd:YVO4 solid-state lasers possess characteristics such as high efficiency, simplicity, compactness, and excellent beam quality. Higher peak power and narrower pulse width can be achieved through the use of a BBO single electro-optic Q-switching crystal. This article explores the incorporation of Cr4+:YAG in to a BBO single electro-optic Q-switching laser to form a dual-Q laser. Experiments have shown that, at a pumping power of10W, the pulse widths of the dual-Q laser and the single electro-optic Q-switching laser are 6.8ns and16.6nsrespectively. At a pumping power of 15W, the highest peak power achieved is 30KW, representing a 19.09%increase compared to the 25.19KW of the single electro-optic Q-switching laser.
The infrared imaging optical system is obviously affected by the temperature change, so it is necessary to carry out non-thermal design to improve the imaging quality. Medium and long wave dual-band infrared imaging technology can acquire the infrared radiation information of medium and long wave at the same time, in this paper, an infrared imaging system is designed to achieve dual-band infrared imaging, and non-thermal processing, improve the quality of infrared image.
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