Frequency stabilization of a Q-switched Nd:YAG laser oscillator with stability better 300 kHz following an rf-sideband scheme |
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| Authors: | Martin Ostermeyer Thomas Waltinger |
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| Institution: | a University of Potsdam, Institute of Physics and Astronomy, Group of Nonlinear Optics, Karl-Liebknecht Str. 24/25, 14476 Potsdam, Germany
b Nano-Optics, Humboldt University, Hausvogteiplatz 5-7, 10117 Berlin, Germany |
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| Abstract: | A frequency stabilization scheme following the Pound-Drever-Hall technique modified with a sample and hold circuit has been applied to a Q-switched diode-pumped Nd:YAG ring oscillator. The high-power ring is injection seeded by a monolithic non-planar ring laser oscillator (NPRO). The slave oscillator emits pulses of 23 ns duration and 20 mJ pulse energy with almost diffraction limited beam quality (M2 = 1.2) at a repetition rate of 400 Hz. The short-term fluctuation of the center frequency from pulse to pulse is 290 kHz. The oscillator is designed for applications within lidar measurements. |
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