Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 18: Laser Development: Solid State Lasers II

Q 18.1: Talk

Tuesday, March 9, 2010, 14:00–14:15, F 128

Numerical investigation of a pulsed loop oscillator injection seeded via gain gratings — •Robert Elsner, Roland Ullmann, and Martin Ostermeyer — Institute for Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany

We present a model of a pulsed loop oscillator that is coupled to a seed laser via gain grating inside a Nd:YAG rod. Such a loop oscillator emits short pulses due to a passive Q-switch realized by the transient diffraction efficiency of the gain grating. Because the gain grating's position is not fixed it can compensate for fluctuations of the resonator length and thus should be applicable for frequency stabilization. Thus the scheme has the potential for spectrally stable pulsed operation without the need for any active stabilization circuit when coupled to a frequency stable master. A set of nonlinear wave equations, their respective boundary conditions and rate equations are used for the numerical model. Numerical calculations are presented and options to reach a spectrally resolved solution within such a model are discussed.

[1] M. J. Damzen et al., Opt. Lett. 20, 1704- (1995)

[2] P. Sillard et al., IEEE J. Quantum Electron. 34, 465*472 (1998)