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Applied Optics

Applied Optics


  • Vol. 39, Iss. 24 — Aug. 20, 2000
  • pp: 4320–4326

Comparative study of tunable room-temperature laser operation in the 900–1100-nm range: LiF:F2 + and Ti3+:sapphire

Chris B. Rawle, Iain T. McKinnie, Valerii V. Ter-Mikirtychev, and Weston J. Sandle  »View Author Affiliations

Applied Optics, Vol. 39, Issue 24, pp. 4320-4326 (2000)

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We report on a comparative evaluation of efficient room-temperature solid-state lasers based on Ti:sapphire and LiF:F2+ operating in the 900–1100-nm range. LiF:F2+ lasers are shown to operate with substantially lower threshold, broader tuning, and higher output pulse energies. The shorter fluorescence lifetime in LiF:F2+ leads to higher peak output powers and a considerable reduction in buildup-time fluctuations. The main limitations on LiF:F2+ laser operation are identified as amplified spontaneous emission (ASE) and long-term thermal degradation of the color centers. ASE restricts the tuning range, slope efficiency, and bandwidth of the LiF:F2+ laser for high pump intensity, but broader tuning is achieved with longer pump pulses. The beam quality of the LiF:F2+ laser is comparable with that of the Ti:sapphire laser.

© 2000 Optical Society of America

OCIS Codes
(010.3640) Atmospheric and oceanic optics : Lidar
(140.1700) Lasers and laser optics : Color center lasers
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3380) Lasers and laser optics : Laser materials
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3590) Lasers and laser optics : Lasers, titanium
(140.3600) Lasers and laser optics : Lasers, tunable

Original Manuscript: October 6, 1999
Revised Manuscript: March 13, 2000
Published: August 20, 2000

Chris B. Rawle, Iain T. McKinnie, Valerii V. Ter-Mikirtychev, and Weston J. Sandle, "Comparative study of tunable room-temperature laser operation in the 900–1100-nm range: LiF:F2+ and Ti3+:sapphire," Appl. Opt. 39, 4320-4326 (2000)

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