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4 March 2022 Compensation of frequency modulation to amplitude modulation in regenerative amplifier using interference filter
Hadrien Devaine, Sébastien Montant , Eric A. G. Lavastre, Denis Penninckx, Alain Braud, Elodie Boursier
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Proceedings Volume PC11980, Solid State Lasers XXXI: Technology and Devices; PC119800D (2022) https://doi.org/10.1117/12.2607354
Event: SPIE LASE, 2022, San Francisco, California, United States
Abstract
This work deals with the compensation of frequency modulation to amplitude modulation (FM-to-AM) conversion due to gain spectral response of a regenerative amplifier. To do so, five designs of interference filters were tested. Direct measurements of FM-to-AM conversion were performed from temporal pulses as a function of wavelength using a 60 GHz bandwidth photodiode and oscilloscope. Additional numerical studies allowed us to find the best trade-off between low optical losses and compensation efficiency over a wide spectral range. With the best interference filter design, low amplitude modulation rate was over 2.0 nm spectral range whereas it was 0.4 nm without.
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Hadrien Devaine, Sébastien Montant , Eric A. G. Lavastre, Denis Penninckx, Alain Braud, and Elodie Boursier "Compensation of frequency modulation to amplitude modulation in regenerative amplifier using interference filter", Proc. SPIE PC11980, Solid State Lasers XXXI: Technology and Devices, PC119800D (4 March 2022); https://doi.org/10.1117/12.2607354
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KEYWORDS
Amplitude modulation
Interference filters
Frequency modulation
Optical amplifiers
Optical filters
Laser scattering
Optical components
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