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Tunable Single-Frequency Near IR Lasers for DIAL ApplicationsTunable single-frequency sources in the 2-4 micron wavelength region are useful for remote DIAL measurements of chemicals and pollutants. We are developing tunable single-frequency transmitters and receivers for both direct and coherent detection lidar measurement applications. We have demonstrated a direct-diode-pumped PPLN-based OPO that operates single frequency, produces greater than 10 mW cw and is tunable over the 2.5 - 3.9 micron wavelength region. This laser has been used to injection seed a pulsed PPLN OPO, pumped by a 1.064 micron Nd:YAG laser, producing 50-100 microJoule single-frequency pulses at 100 Hz PRF near 3.6 micron wavelength. In addition, we have demonstrated a cw Cr:ZnSe laser that is tunable over the 2.1 - 2.8 micron wavelength region. This laser is pumped by a cw diode-pumped Tm:YALO laser and has produced over 1.8 W cw. Tm- and Tm, Ho-doped single-frequency solid-state lasers that produce over 50 mW cw and are tunable over approximately 10 nm in the 2 -2.1 micron band with fast PZT tuning have also been demonstrated. A fast PZT-tunable Tm, Ho:YLF laser was used for a direct-detection column content DIAL measurement of atmospheric CO2. Modeling shows that that all these cw and pulsed sources are useful for column-content coherent DIAL measurements at several km range using topographic targets.
Document ID
20010097213
Document Type
Conference Paper
Authors
Henderson, Sammy W.
(Coherent Technologies, Inc. Lafayette, CO United States)
Marquardt, John H.
(Coherent Technologies, Inc. Lafayette, CO United States)
Carrig, Timothy J.
(Coherent Technologies, Inc. Lafayette, CO United States)
Gatt, Phil
(Coherent Technologies, Inc. Lafayette, CO United States)
Smith, Duane D.
(Coherent Technologies, Inc. Lafayette, CO United States)
Hale, Charley P.
(Coherent Technologies, Inc. Lafayette, CO United States)
Date Acquired
August 20, 2013
Publication Date
January 30, 2000
Publication Information
Publication: Lidar Remote Sensing for Industry and Environment Monitoring
Volume: 4153
Subject Category
Lasers And Masers
Funding Number(s)
CONTRACT_GRANT: F29601-97-C-0033
CONTRACT_GRANT: NSF DMI-97-61589
Distribution Limits
Public
Copyright
Other

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