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  • Vol. 20, Iss. 6 — Mar. 15, 1995
  • pp: 638–640

Injection-seeded alexandrite ring laser: performance and application in a water-vapor differential absorption lidar

V. Wulfmeyer, J. Bösenberg, S. Lehmann, C. Senff, and St. Schmitz  »View Author Affiliations


Optics Letters, Vol. 20, Issue 6, pp. 638-640 (1995)
http://dx.doi.org/10.1364/OL.20.000638


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Abstract

A new laser system for use of differential absorption lidar (DIAL) in measurements of tropospheric water vapor and temperature is introduced. This system operates in the 720 – 780-nm region and is configured as an alexandrite ring laser injection seeded by a cw Ti:sapphire ring laser. This combination provides for the necessary narrow-bandwidth, high-frequency stability and excellent spectral purity. A bandwidth of <5.0 × 10−3 cm−1, a frequency stability of 2.1 × 10−3 cm−1 rms, and a spectral purity of 99.995% at 726 nm have been achieved during extended periods of operation. A comparison of a DIAL water-vapor measurement with a radiosonde in the boundary layer between 500 and 2000 m was performed. The maximum deviation between the humidity profiles is 15%, the standard deviation 1.6%, and the difference between the mean values 1%.

© 1995 Optical Society of America

History
Original Manuscript: November 15, 1994
Published: March 15, 1995

Citation
V. Wulfmeyer, St. Schmitz, J. Bösenberg, S. Lehmann, and C. Senff, "Injection-seeded alexandrite ring laser: performance and application in a water-vapor differential absorption lidar," Opt. Lett. 20, 638-640 (1995)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-20-6-638


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