Pervak Vladimir, Amotchkina Tatiana, Wang Qing, Pronin Oleg, Mak Ka Fai, Trubetskov Michael
Opt Express. 2019 Jan 7;27(1):55-62. doi: 10.1364/OE.27.000055.
Dispersive mirrors operating in a broadband infrared spectral range are reported for the first time. The mirrors are based on Si/SiO thin-film materials. The coatings exhibit reflectance exceeding 99.6% in the spectral range from 2 to 3.2 µm and provide a group delay dispersion of -100 fs and -200 fs in this range. The fabricated mirrors are expected to be key elements of Cr:ZnS/Cr:ZnSe femtosecond lasers and amplifiers. The mirrors open a new avenue in the development of ultrafast dispersive optics operating in the infrared spectral range.
首次报道了在宽带红外光谱范围内工作的色散镜。这些镜子基于硅/二氧化硅薄膜材料。涂层在2至3.2微米的光谱范围内反射率超过99.6%，并在此范围内提供-100飞秒和-200飞秒的群延迟色散。制造的镜子有望成为铬：硫化锌/铬：硒化锌飞秒激光器和放大器的关键元件。这些镜子为在红外光谱范围内工作的超快色散光学的发展开辟了一条新途径。
