高色散镜的设计和制备

摘要

设计和制备了两种高色散镜,分别在780—870nm波长范围内提供约-800fs2群延迟色散补偿（group-delay dispersion,GDD）和在1030—1050nm的波长范围内提供约-2500fs2的群延迟色散补偿.设计的高色散镜用双离子束溅射方法进行制备.从白光干涉仪的测试结果可以看出,得到的-800fs2GDD高色散镜和设计符合得比较好;-2500fs2GDD的高色散镜用在掺Yb光纤激光器中很好的抑制了脉冲展宽.这是制备得到的国产高色散镜及在光纤激光器中应用的首次报道.%The designed and manufactured high dispersion mirror combines the characteristics of chirped mirror and Gires-Tournois interferometer（GTI） mirror and provides high dispersion compensation with about -800fs2 GDD in a wavelength range of 780—830 nm and about -2500fs2 GDD in a wavelength range 1030—1050 nm,respectively.The dispersion mirror is manufactured by ion beam sputtering.The performance of the mirror has reached the designed values and can compensate the normal dispersion from ultrafst laser system effectively.