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Journal of Applied Remote Sensing

Eye-safe, 243-mJ, rapidly tuned by injection-seeding, near-infrared, optical, parametric, oscillator-based differential-absorption light detection and ranging transmitter
Author(s): Robert Foltynowicz; Michael D. Wojcik
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Paper Abstract

Here, we demonstrate and characterize a high-energy, eye-safe, spectrally narrow, and frequency-agile near-IR optical parametric oscillator (OPO). The injection-seeded, noncritical phase-matched (NCPM) potassium titanyle arsenate (KTA) and ring-cavity OPO was pumped in single longitudinal mode (SLM) at 7 ns full width at half maximum FWHM and 30 Hz, neodymium-doped yttrium aluminum garnet (Nd:YAG), generating 243 mJ per pulse OPO signal output with a conversion efficiency of 27%, spectral linewidth of 157 MHz, and approximately M2 of 29. Also, we demonstrate a nonmechanical method to switch the frequency of the OPO at a rate of 2 Hz from 1535.036 to 1535.195 nm, which represents the on/off resonances of carbon dioxide, respectively. However, the switching rate can be extended into the MHz range and is limited by the electronics driving the diode laser. Given the performance results of our frequency-agile OPO, this transmitter has great potential as a source in DIAL applications.

Paper Details

Date Published: 8 March 2012
PDF: 8 pages
J. Appl. Rem. Sens. 6(1) 063510 doi: 10.1117/1.JRS.6.063510
Published in: Journal of Applied Remote Sensing Volume 6, Issue 1
Show Author Affiliations
Robert Foltynowicz, Utah State Univ. (United States)
Michael D. Wojcik, Space Dynamics Lab. (United States)

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