A 927 nm distributed feedback laser with surface second-order metal grating

作者：Shi Jun Xiu; Qin Li^*; Ye Shu Juan; Zhang Nan; Liu Yun; Ning Yong Qiang; Tong Cun Zhu; Zeng Yu Gang; Wang Li Jun

来源：Journal of Optoelectronics - Laser, 2011, 22(10): 1488-1491.

• Cavity length
• Continuous-wave operations
• Epitaxial regrowth
• Far field
• Grating fabrication
• Holographic photolithography
• Large current
• Metal grating
• Output power
• Pulsed operation
• Room temperature
• Second orders
• Single mode emission
• Slope efficiencies
• Spectral line width
• Wallplug efficiency
• Wavelength shift

This paper reports a broad-area distributed feedback (DFB) laser with surface second-order metal grating, based on the holographic photolithography and wet etching technology without epitaxial regrowth process after the grating fabrication. At room temperature, for the uncoated device with a cavity length of 1 mm, the stable longitudinal single-mode emission around 927 nm has been achieved in a large current range. In pulsed operation, at a current of 2.28 A, the front facet output power is above 600 mW, and the slope efficiency is as high as 0.37 mW/mA with a wallplug efficiency of 11%. In continuous-wave (CW) operation, at a current of 1.6 A, the same device delivers front facet output power more than 200 mW with a spectral linewidth less than 0.8 nm and the minimum wavelength shift of 0.43 nm/A. A small lateral far field angle of 2.1° is obtained at the current of 1 A.

• 出版日期2011