Theoretical and experimental investigations of small-signal gain for a diode-pumped Q-switched Cr:LiSAF laser

Journal Article · Sat Feb 01 04:00:00 EST 1997 · IEEE Journal of Quantum Electronics

DOI:https://doi.org/10.1109/3.552268· OSTI ID:449532

Balembois, F; Falcoz, F; Kerboull, F; Druon, F; Georges, P; Brun, A ^[1]

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1. Univ. Paris-Sud, Orsay (France). Inst. d`Optique Theorique et Appliquee

The authors present a theoretical model proving that up-conversion and thermal quenching of fluorescence strongly limit small-digital gain in a CW pumped Cr:LISAF laser. They have a good agreement with experimental measurements of small-signal gain obtained with a new simple method. They have then optimized the gain in a Cr:LiSAF laser pumped by two 400-mW red diodes. The highest gain, 1.11 at 600 mW of absorbed pump power, is obtained if the pump spot is circularized inside the crystal and if the Cr:LiSAF is pumped on both sides. In Q-switched operation, this laser produces tunable pulses (up to 6.5 {micro}J at 10 kHz) between 800 and 900 nm.

• OSTI ID: 449532
• Journal Information: IEEE Journal of Quantum Electronics, Journal Name: IEEE Journal of Quantum Electronics Journal Issue: 2 Vol. 33; ISSN 0018-9197; ISSN IEJQA7
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GAIN
MATHEMATICAL MODELS
OPTICAL PUMPING
PERFORMANCE
Q-SWITCHING
SEMICONDUCTOR DIODES
SOLID STATE LASERS