• DocumentCode
    1138751
  • Title

    FM-laser operation of the Nd:YAG laser

  • Author

    Kuizenga, Dirk J. ; Siegman, A.E.

  • Author_Institution
    Microwave Laboratory and Dept. of Electrical Engineering, Stanford University, Stanford, CA
  • Volume
    6
  • Issue
    11
  • fYear
    1970
  • fDate
    11/1/1970 12:00:00 AM
  • Firstpage
    673
  • Lastpage
    677
  • Abstract
    The FM-laser or frequency-sweeping mode of laser oscillation has been demonstrated in a Nd :YAG 1.06-μ laser with an intracavity LiNbO3phase modulator. The experimental results are in excellent agreement with the theoretical expression \\Delta = (\\Delta \\Omega /\\Delta \\nu) (\\delta /\\pi) where δ= peak single-pass phase retardation in the modulator, \\Delta \\Omega = axial mode spacing, \\Delta \\nu =modulator detuning, and Δ=resulting FM index of the laser output. Modulation indices as large as \\Delta \\approx 230 rad have been obtained, in which case the instantaneous laser frequency is sweeping over a full spectral range of 2\\Delta \\cdot f_{m} \\approx 120 GHz (≈ 4 cm-1) at a repetition frequency f_{m} \\approx 260 MHz, with a time-bandwidth product per period \\approx 2\\Delta \\approx 460 . The coherently mode-locked spectral bandwidth thus obtained in the FM-laser case is very much wider than can be achieved in the pulsed mode-locked case with the same Nd:YAG laser. Some possible ways of using this broad-band coherent FM spectrum are suggested.
  • Keywords
    Frequency modulation; Gas lasers; Laser mode locking; Laser modes; Laser theory; Laser tuning; Lasers and electrooptics; Optical pulses; Phase modulation; Pulse modulation;
  • fLanguage
    English
  • Journal_Title
    Quantum Electronics, IEEE Journal of
  • Publisher
    ieee
  • ISSN
    0018-9197
  • Type

    jour

  • DOI
    10.1109/JQE.1970.1076348
  • Filename
    1076348
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1138751