• Chinese Optics Letters
  • Vol. 19, Issue 12, 121403 (2021)
Shanting Hu1、2、*, Xiaodong Gu2、3, Masanori Nakahama2、3, and Fumio Koyama2
Author Affiliations
  • 1Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 2Institute of Innovative Research (IIR), Tokyo Institute of Technology, 4259-R2-22 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
  • 3Ambition Photonics Inc., Yokohama 226-8510, Japan
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    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.
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    Shanting Hu, Xiaodong Gu, Masanori Nakahama, Fumio Koyama. Non-mechanical beam scanner based on VCSEL integrated amplifier with resonant wavelength detuning design[J]. Chinese Optics Letters, 2021, 19(12): 121403
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    Category: Lasers, Optical Amplifiers, and Laser Optics
    Received: Apr. 12, 2021
    Accepted: Jun. 4, 2021
    Posted: Jun. 7, 2021
    Published Online: Sep. 17, 2021
    The Author Email: Shanting Hu (hu.s.ab@m.titech.ac.jp)