Stuttgart 2012 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 54: Poster 3
Q 54.20: Poster
Thursday, March 15, 2012, 16:30–19:00, Poster.I+II
Numerical Investigation of Frequency Stable Coupling of Laser Oscillators via Gain Gratings — •Robert Elsner1, Roland Ullmann1, Axel Heuer1, Ralf Menzel1, and Martin Ostermeyer1,2 — 1University of Potsdam, Institute for Physics and Astronomy, Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany — 2IB Laser, Am Schlangengraben 16, 13597 Berlin, Germany
Pulsed laser sources with a high shot-to-shot frequency stability are required for advanced LIDAR techniques. Frequency stable operation of such laser sources is commonly achieved using active stabilization schemes. Unfortunately, the performance of these active schemes is inherently limited by the bandwidth of the controller. Therefore, it would be advantageous for mobile applications if the components for active stabilization could be discarded. Gain gratings in saturable gain media offer the potential to realize such a passive stabilization scheme in self-Q-switched loop resonators [1,2]. The spectral and spatial selectivity of the gain grating in combination with a cw seed ensures single-frequency operation and high shot-to-shot stability. This passive coupling scheme is investigated numerically. Existing numerical models are extended to two spatial dimensions and selected results are presented.
[1] Damzen et al. Opt. Lett. 20, 1704(1995)
[2] Sillard et al. J. Quantum Electron, IEEE J. of 34, 465-472(1998)