NDLI: Pulsed, tunable 900-1100 nm lasers: LiF:F/sub 2//sup +/ versus Ti/sup 3+/:sapphire

Content Provider	IEEE Xplore Digital Library
Author	Rawle, C.B. McKinnie, I.T. Ter-Mikirtychev, V.V. Sandle, W.J.
Copyright Year	2000
Description	Author affiliation: Dept. of Phys., Otago Univ., Dunedin, New Zealand (Rawle, C.B.)
Abstract	Summary form only given. Broadly tunable solid state lasers are required for applications such as LIDAR where multi-wavelength measurements can determine size, shape and distribution of atmospheric aerosols. However, in the important 900-1100 nm range, established reliable and efficient tunable solid state lasers are not currently available Although Ti:sapphire lasers do operate in this range, the gain of Ti/sup 3+/ is comparatively low at these wavelengths. To fill this spectral gap for LIDAR applications, we have developed and evaluated LiF:F/sub 2//sup +/ room temperature color center lasers pumped by 532 nm radiation. Since 532 nm matches the absorption bands of both F/sub 2/ and F/sub 2/, the pump light is used to simultaneously create the laser active F/sub 2//sup +/ (by the two-step F/sub 2//spl rarr/F/sub 2//spl rarr/F/sub 2//sup */ process) and excite the F/sub 2//sup +/ centers. Here we show that LiF:F/sub 2//sup +/ operates with substantially lower thresholds, broader tuning, higher output pulse energies and shorter pulses than Ti:sapphire in the 90-1100 nm spectral region. The principal limitations on LiF:F/sub 2//sup +/ lasers are identified as ASE and a slow thermal degradation.
File Size	115195
File Format	PDF
ISBN	0780363183
DOI	10.1109/IQEC.2000.908047
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-09-10
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical pulses Tunable circuits and devices Solid lasers Pump lasers Laser excitation Laser radar Shape measurement Laser tuning Atmospheric measurements Size measurement
Content Type	Text
Resource Type	Article

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