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Proceedings Paper

Generation of a train of ps-pulses from a diode pumped Nd-laser using electro-optical negative feedback
Author(s): A. Gaydardzhiev; D. Draganov; I. Buchvarov; A. Stalnionis; A. Trifonov; T. Fiebig
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Paper Abstract

Mode locking with frequency dependent nonlinear mirror of Nd:YAG laser with electro-optical negative feedback has been presented. We use a LBO based nonlinear mirror thermally stabilized at a temperature corresponding to noncritical phase matching of the frequency doubling at 1.064 μm. Employing a resonator polarization output detected by a fast photodiode we control resonator losses through a Pockels cell. By creating a negative feedback we achieved q-switch suppression, thus stabilizing the mode-locking regime. Through a simple theoretical model we derived a relation for the laser parameters for stable laser operation. We achieved a stable train of picosecond pulses grouped in the 200 microsecond pump macropulse. Macropulse output energy is 4 mJ at a pump repetition rate of 400 Hz. The picosecond pulse train frequency determined by the resonator length is 115 MHz.

Paper Details

Date Published: 11 November 2009
PDF: 8 pages
Proc. SPIE 7501, International Conference on Ultrafast and Nonlinear Optics 2009, 750107 (11 November 2009); doi: 10.1117/12.849944
Show Author Affiliations
A. Gaydardzhiev, Sofia Univ. (Bulgaria)
D. Draganov, Sofia Univ. (Bulgaria)
I. Buchvarov, Sofia Univ. (Bulgaria)
A. Stalnionis, Standa Ltd. (Lithuania)
A. Trifonov, Boston College (United States)
T. Fiebig, Boston College (United States)

Published in SPIE Proceedings Vol. 7501:
International Conference on Ultrafast and Nonlinear Optics 2009
Solomon M. Saltiel; Alexander A. Dreischuh; Ivan P. Christov, Editor(s)

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