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Characteristics of 32 × 32 Photonic Quantum Ring Laser Array for Convergence Display Technology

디스플레이 융합 기술 개발을 위한 32 × 32 광양자테 레이저 어레이의 특성

  • Lee, Jongpil (Department of Renewable Energy, Jungwon University) ;
  • Kim, Moojin (Department of Renewable Energy, Jungwon University)
  • 이종필 (중원대학교 신재생에너지자원학과) ;
  • 김무진 (중원대학교 신재생에너지자원학과)
  • Received : 2017.03.28
  • Accepted : 2017.05.20
  • Published : 2017.05.28

Abstract

We have fabricated and characterized $32{\times}32$ photonic quantum ring (PQR) laser arrays uniformly operable with $0.98{\mu}A$ per ring at room temperature. The typical threshold current, threshold current density, and threshold voltage are 20 mA, $0.068A/cm^2$, and 1.38 V. The top surface emitting PQR array contains GaAs multiquantum well active regions and exhibits uniform characteristics for a chip of $1.65{\times}1.65mm^2$. The peak power wavelength is $858.8{\pm}0.35nm$, the relative intensity is $0.3{\pm}0.2$, and the linewidth is $0.2{\pm}0.07nm$. We also report the wavelength division multiplexing system experiment using angle-dependent blue shift characteristics of this laser array. This photonic quantum ring laser has angle-dependent multiple-wavelength radial emission characteristics over about 10 nm tuning range generated from array devices. The array exhibits a free space detection as far as 6 m with a function of the distance.

Acknowledgement

Supported by : National Research Foundation (NRF)

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