Red and Green Distributed-Feedback LiF Color Center Lasers Fabricated by Interference of Femtosecond Laser Pulses

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Author(s)

    • OBAYASHI Yoshihiro
    • Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192
    • KUROBORI Toshio
    • Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192
    • HIROSE Yukio
    • Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192
    • SAKAI Toshiaki
    • Central Research Laboratory, Hamamatsu Photonics K. K., 5000 Hirakuchi, Hamakita-ku, Hamamatsu 434-8601
    • AOSHIMA Shin-ichiro
    • Central Research Laboratory, Hamamatsu Photonics K. K., 5000 Hirakuchi, Hamakita-ku, Hamamatsu 434-8601

Abstract

Sub-micron periodic gratings inside bulk lithium fluoride (LiF) are holographically fabricated by interference with the second harmonic (390 nm) of a mode-locked Ti:sapphire oscillator-amplifier laser. As one optoelectronic application, pulsed, room temperature distributed feedback (DFB) color center laser action is demonstrated, for the first time, in the green spectral region based on the F<sub>3</sub>+ color centers in LiF utilizing both a micro-structure encoded by femtosecond-laser-pulses, and higher gain of the laser-active centers produced by an e-ray irradiation at 200 K. A lasing output with a linewidth of 0.5 nm is obtained at approximately 537 nm, which value reflects the selective laser resonator. Realization of green and red DFB color center lasers based on the F<sub>3</sub>+ and F<sub>2</sub> centers in LiF excited by a single wavelength can be expected.

Journal

  • The Review of Laser Engineering

    The Review of Laser Engineering 36(APLS), 1226-1229, 2008

    The Laser Society of Japan

Codes

  • NII Article ID (NAID)
    130004466008
  • Text Lang
    ENG
  • ISSN
    0387-0200
  • Data Source
    J-STAGE 
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