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Experimental method of transfer function linewidth determination for laser amplifiers using FM-to-AM conversion

Elodie Boursier, Hadrien Devaine, Alain Braud, and Sébastien Montant

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Abstract

We propose an experimental method for the determination of the transfer function linewidth of a laser amplifier. This technique is based on a transfer function scan using frequency modulation to amplitude modulation (FM-to-AM) temporal modulation measurement as a function of wavelength. Using this method, we show that the output spectrum of a laser amplifier in Q-switch mode is not representative of the transfer function of the amplifier.

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Data underlying the results presented in this Letter are not publicly available at this time but may be obtained from the authors upon reasonable request.

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