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Applied Optics

Applied Optics


  • Vol. 44, Iss. 24 — Aug. 22, 2005
  • pp: 5120–5126

Injection-seeded pulsed Ti:sapphire laser with novel stabilization scheme and capability of dual-wavelength operation

Klaus Ertel, Holger Linné, and Jens Bösenberg  »View Author Affiliations

Applied Optics, Vol. 44, Issue 24, pp. 5120-5126 (2005)

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A gain-switched, single-frequency titanium–sapphire laser for atmospheric humidity measurements using the differential absorption lidar technique operating in the 820 nm wavelength region is described. The laser is pumped by a frequency-doubled, flashlamp-pumped Nd:YAG laser at a repetition rate of 50 Hz and injection seeded by two external-cavity-diode lasers. The system yields pulses with an energy of 15 mJ and high spectral purity. We describe a novel active injection-locking technique that avoids the problems of established methods like dither-lock or ramp-and-fire. Furthermore, our method opens the possibility to switch between two wavelengths for alternating shots, in contrast to most established techniques that only allow operation at one wavelength.

© 2005 Optical Society of America

OCIS Codes
(010.3640) Atmospheric and oceanic optics : Lidar
(010.7340) Atmospheric and oceanic optics : Water
(140.3520) Lasers and laser optics : Lasers, injection-locked
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.3590) Lasers and laser optics : Lasers, titanium
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar

Original Manuscript: November 23, 2004
Manuscript Accepted: January 7, 2005
Published: August 20, 2005

Klaus Ertel, Holger Linné, and Jens Bösenberg, "Injection-seeded pulsed Ti:sapphire laser with novel stabilization scheme and capability of dual-wavelength operation," Appl. Opt. 44, 5120-5126 (2005)

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