Modeling of diode end-pumped cw and Q-switched Nd:YAG laser oscillators

Sagie Tsadka; Raphael Lavi; Steven M. Jackel

doi:10.1117/12.150993

13 August 1993 Modeling of diode end-pumped cw and Q-switched Nd:YAG laser oscillators

Sagie Tsadka, Raphael Lavi, Steven M. Jackel

Proceedings Volume 1971, 8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing; (1993) https://doi.org/10.1117/12.150993
Event: 8th Meeting in Israel on Optical Engineering, 1992, Tel Aviv, Israel

Abstract

A theoretical model which describes the performance of cw and Q-switched diode end pumped laser oscillators was developed. The model takes into account the pumping geometry, the cavity geometry, the physical parameters of the lasing material, and various mechanisms of losses in the oscillator. Among the analytical predictions of this model are: threshold of lasing, total output energy, and temporal behavior of the laser pulse in the case of a Q-switched operation. In most of the models applied until now, an assumption of small gain was made in order to get an analytic expression for the output power of the laser in steady state conditions. In the present model this limiting assumption is dropped. In addition, in the Q-switched part of the model an analytical estimation is incorporated for two efficiency factors: one describing the fill factor of the lasing mode and the other considering the finite lifetime of the lower laser level.

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Sagie Tsadka, Raphael Lavi, and Steven M. Jackel "Modeling of diode end-pumped cw and Q-switched Nd:YAG laser oscillators", Proc. SPIE 1971, 8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing, (13 August 1993); https://doi.org/10.1117/12.150993

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KEYWORDS

Pulsed laser operation

Oscillators

Q switched lasers

Q switching

Mirrors

Laser resonators

Nd:YAG lasers

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