Characteristics and kinetics of laser-pumped Ti:Sapphire oscillators

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/3.222· OSTI ID:6832013

Eggleston, J M; De Shazer, L G; Kangas, K W

The experimental performance of a gain-switched Ti:Sapphire laser oscillator pumped by a frequency-doubled Q-switched Nd:YAG laser system is presented for a variety of operating conditions. A theoretical model developed for this oscillator predicts well its performance. In particular, the observed curved input-output energy plots for the oscillator result from the kinetics of gain switching and fluorescence decay during the gain buildup period. Fluorescence decay also produces observed oscillator thresholds higher than those normally predicted by the standard gain-equals-loss condition. Gain-switched parasitic modes, with a higher threshold but shorter roundtrip time than the resonator mode, cause the resonator mode to oscillate only over a finite range of pump energies. Also, spectroscopic investigations show that the Ti:Sapphire cross-section spectrum is well fit by a Poisson distribution, giving a peak cross section of 3 x 10/sup -19/ cm/sup 2/ for the ..pi.. polarization.

• Research Organization: Solidlite Corp., Redmond, WA (US)
• OSTI ID: 6832013
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 24:6; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BENCH-SCALE EXPERIMENTS
CAVITY RESONATORS
CHALCOGENIDES
CORUNDUM
CROSS SECTIONS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FLUORESCENCE
KINETICS
LASERS
LUMINESCENCE
MATHEMATICAL MODELS
MATHEMATICS
METALS
MINERALS
OSCILLATIONS
OSCILLATORS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLARIZATION
RESONATORS
SAPPHIRE
SOLID STATE LASERS
STATISTICS
TITANIUM
TRANSITION ELEMENTS