1045 nm purely gain coupled semiconductor laser based on periodic electric injection

Ma, Dezheng; Chen, Yongyi; Lei, Yuxin; Jia, Ping; Gao, Feng; Zeng, Yugang; Liang, Lei; Song, Yubin; Ruan, Chunkao; Liu, Xia; Q, Li; Wang, Lijun

doi:10.1016/j.jlumin.2020.117372

Cited by 1 publication

(1 citation statement)

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“…In our previous studies, gain-coupled DFB semiconductor lasers with wavelengths of 795 nm, 905 nm, 990 nm, and 1045 nm were fabricated based on periodic electrodes windows and surface grating structures [17][18][19][20]. The periodic electrical injection of the surface p-electrode caused the quantum wells in the active region to generate periodic gain differences to realize the gain coupling effect and enable the device to achieve stable single longitudinal mode output [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Development of a High-Power Surface Grating Tunable Distributed-Feedback Bragg Semiconductor Laser Based on Gain-Coupling Effect

Liang

et al. 2022

Applied Sciences

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Lasers used for space communication, lidar, and laser detection in space-air-ground integration applications typically use a traditional 1550 nm band tunable distributed-feedback Bragg (DFB) semiconductor laser. This has low output power, complex fabrication process, and high fabrication cost. In this paper, we present a gain-coupled surface grating-based 1550 nm DFB semiconductor laser that can be fabricated without the use of secondary epitaxial growth techniques or high-precision lithography. The periodic electrical injection is used to achieve a gain coupling effect. A tapered waveguide is added to achieve a high output power, and the use of AlGaInAs multiple quantum wells in the active region reduces the linewidth of the laser. A continuous-wave (CW)output power of 401.5 mW is achieved at 20 °C, the maximum side mode rejection ratio exceeds 55 dB, the measured 3 dB linewidth is 18.86 MHz, and the stable single-mode output with a quasi-continuous tuning range of 6.156 nm near 1550 nm from 10 °C to 50 °C. This simple preparation method, low cost, excellent performance, and stable tunable laser have extremely high commercial value in applications such as space communication, lidar, and laser detection.

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