• Title, Summary, Keyword: Photonic quantum ring laser array

Search Result 5, Processing Time 0.033 seconds

A One-Kilobit PQR-CMOS Smart Pixel Array

  • Lim, Kwon-Seob;Kim, Jung-Yeon;Kim, Sang-Kyeom;Park, Byeong-Hoon;Kwon, O'Dae
    • ETRI Journal
    • /
    • v.26 no.1
    • /
    • pp.1-6
    • /
    • 2004
  • The photonic quantum ring (PQR) laser is a three dimensional whispering gallery (WG) mode laser and has anomalous quantum wire properties, such as microampere to nanoampere range threshold currents and ${\sqrt{T}}$-dependent thermal red shifts. We observed uniform bottom emissions from a 1-kb smart pixel chip of a $32{\times}32$ InGaAs PQR laser array flip-chip bonded to a 0.35 ${\mu}m$ CMOS-based PQR laser driver. The PQR-CMOS smart pixel array, now operating at 30 MHz, will be improved to the GHz frequency range through device and circuit optimization.

  • PDF

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;Kim, Moojin
    • Journal of the Korea Convergence Society
    • /
    • v.8 no.5
    • /
    • pp.161-167
    • /
    • 2017
  • 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.

High-efficiency High-power Red PQR Laser Array (고효율 고출력 적색 광양자테 레이저 어레이)

  • Kim, Chang-Hun;Sin, Mi-Hyang;Kim, Yeong-Cheon;Jang, Yeong-Heup;Chae, Gwang-Hyeon;Gwon, O-Dae;Seong, Seung-Gi;Han, Seong-Hong
    • Proceedings of the Optical Society of Korea Conference
    • /
    • /
    • pp.317-318
    • /
    • 2008
  • High-efficiency high-power red PQR (photonic Quantum Ring) lasers with low threshold currents have been fabricated for low cost and low power consumption, whose structure is based upon high-power LED epi-wafers modified for vertically dominant PQR helix resonance. Preliminary experimental results are very promising for panel-less PQR laser chip TV applications.

  • PDF