Asymmetric wide-coupled waveguide 980nm laser diode with high power and low vertical divergence angle

Cong Xiong; Qiong Qi; Suping Liu; Xiaoyu Ma

doi:10.1117/12.2037169

23 December 2013 Asymmetric wide-coupled waveguide 980nm laser diode with high power and low vertical divergence angle

Cong Xiong, Qiong Qi, Suping Liu, Xiaoyu Ma

Proceedings Volume 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing; 904310 (2013) https://doi.org/10.1117/12.2037169
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

A novel asymmetric wide-coupled waveguide structure is put forward. We optimize the thickness of N-type waveguide and cladding through theoretical calculation of this structure, and adopt LP-MOCVD to grow the designed semiconductor lasers. The fabricated 980nm laser with 1200μm cavity length has a threshold current of 590mA, slope efficiency of 0.96W/A. When the operating current is 2.6A, the output power is 2000mW and the far field divergence angle is 16.1° (vertical) by 10.2° (horizontal). Experimental results indicate that the novel asymmetric wide-coupled waveguide structure can achieve high power output, effectively reduce the vertical far field divergence angle and improve the beam quality of the device.

Citation Download Citation

Cong Xiong, Qiong Qi, Suping Liu, and Xiaoyu Ma "Asymmetric wide-coupled waveguide 980nm laser diode with high power and low vertical divergence angle", Proc. SPIE 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 904310 (23 December 2013); https://doi.org/10.1117/12.2037169

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