Optimization of quasi-three level end-pumped Q-switched lasers

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · IEEE Journal of Quantum Electronics

DOI:https://doi.org/10.1109/3.406371· OSTI ID:137053

Beach, R J ^[1]

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1. Lawrence Livermore National Lab., CA (United States)

Equations describing the pump excitation and Q-switched energy extraction of end-pumped, quasi-three level laser systems are collected. A transcendental expression relating the Q-switched laser output energy to the laser`s initial gain and cavity transmission which is valid for arbitrary output coupling is derived. This expression simplifies sensitivity and optimization studies of such systems. A first order ordinary differential equation is derived which describes the rod-integrated excited state number density resulting from an arbitrary pump excitation pulse. The equation is valid for both single pass and double pass pump geometries. To illustrate the utility of the collected set of equations an end-pumped joule class, Q-switched Yb:YAG oscillator is optimized and studied.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 137053
• Journal Information: IEEE Journal of Quantum Electronics, Journal Name: IEEE Journal of Quantum Electronics Journal Issue: 9 Vol. 31; ISSN 0018-9197; ISSN IEJQA7
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ALUMINIUM OXIDES
DOPED MATERIALS
EXCITATION
FERRITE GARNETS
LASER CAVITIES
LASER MATERIALS
OPTICAL PUMPING
Q-SWITCHING
SENSITIVITY ANALYSIS
SOLID STATE LASERS
YTTERBIUM
YTTRIUM COMPOUNDS