Non-mechanical beam scanner based on VCSEL integrated amplifier with resonant wavelength detuning design  

作　　者：Shanting Hu Xiaodong Gu Masanori Nakahama Fumio Koyama 胡善亭;顾晓东;中滨正统;小山二三夫(Beijing University of Posts and Telecommunications,Beijing 100876,China;Institute of Innovative Research(IIR),Tokyo Institute of Technology,4259-R2-22 Nagatsuta-cho,Midori-ku,Yokohama 226-8503,Japan;Ambition Photonics Inc.,Yokohama 226-8510,Japan)

机构地区：[1]Beijing University of Posts and Telecommunications,Beijing 100876,China [2]Institute of Innovative Research(IIR),Tokyo Institute of Technology,4259-R2-22 Nagatsuta-cho,Midori-ku,Yokohama 226-8503,Japan [3]Ambition Photonics Inc.,Yokohama 226-8510,Japan

出　　处：《Chinese Optics Letters》2021年第12期39-44,共6页中国光学快报（英文版）

基　　金：supported by JST ACCEL。

摘　　要：We demonstrate the non-mechanical beam steering and amplifier operation of a vertical cavity surface emitting laser(VCSEL)integrated Bragg reflector waveguide amplifier with a cut-off wavelength detuning design,which enables unidirectional lateral coupling,continuous electrical beam steering,and diffraction-limited divergence angle.We present the modeling of the proposed structure for unidirectional coupling between a seed single-mode VCSEL and slow-light amplifier.We also present the detailed operating characteristics including the near-field and far-field patterns,light/current characteristics,and lasing spectrum.The experimental measurements exhibit a single-mode output of over 8 mW under CW operation,a continuous beam steering range of 16°,and beam divergence below 0.1°as an optical beam scanner.The integrated amplifier length is as small as 0.9 mm,and thus we could expect much higher powers and higher resolution points by increasing the amplifier lengths.

关 键 词：VCSEL integrated amplifier unidirectional coupling optical beam scanner 

分 类 号：TN722[电子电信—电路与系统] TN248