Laser & Optoelectronics Progress, Volume. 54, Issue 7, 70501(2017)
Design of 2 μm Waveband GaSb Based Subwavelength Grating Mirror
A 2 μm waveband GaSb based subwavelength grating mirror is investigated, and the influence of subwavelength grating parameters on reflection spectrum is discussed. The mirror has a wide bandwidth and a high reflectivity with center wavelength of 2 μm in case of TM mode. The ratio of reflection bandwidth to central wavelength is more than 26% when the reflectivity is more than 99%. Especially, reflectivity of the mirror is more than 99.9% at the range of 1.895-2.08 μm, and the bandwidth is 185 nm, while the reflectivity in TE mode is lower than the lasing condition of the vertical cavity surface emitting laser (reflectivity is less than 95%). Each parameter of the structure has bigger fabrication tolerance, which facilitates monolithic integration of vertical cavity surface emitting laser.
Get Citation
Copy Citation Text
Xie Jianlai, Hao Yongqin, Wang Zhiwei, Wang Xia, Yan Changling, Liu Guojun, Ma Xiaohui, Li Yang, Yue Guangli, Zhang Xin. Design of 2 μm Waveband GaSb Based Subwavelength Grating Mirror[J]. Laser & Optoelectronics Progress, 2017, 54(7): 70501
Category: Diffraction and Gratings
Received: Jan. 11, 2017
Accepted: --
Published Online: Jul. 5, 2017
The Author Email: Jianlai Xie (xiejianlai@163.com)