Spectral phase aberration and its influence on pulse compression in an actively modulated ultrafast laser system

Ke Wang; Kai Wang; Ping Qiu

doi:10.1117/12.2074993

16 March 2015 Spectral phase aberration and its influence on pulse compression in an actively modulated ultrafast laser system

Ke Wang, Kai Wang, Ping Qiu

Author Affiliations +

Proceedings Volume 9357, Physics and Simulation of Optoelectronic Devices XXIII; 935705 (2015) https://doi.org/10.1117/12.2074993
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

In actively modulated laser systems such as the time-lens source, quadratic temporal phase modulation was naturally considered as the “ideal” modulation. However, it is unknown that whether a quadratic temporal phase modulation (equivalently, a linear chirp) translates into a quadratic spectral phase modulation, which can be easily eliminated using compressors. Here we study this phase transfer both analytically and numerically. Our results indicate that non-quadratic spectral phase aberration arises even if the temporal phase modulation is quadratic. Consequently, there is observable difference between the compressed pulses with a flat spectral phase and with quadratic spectral phase compensation only. However, as quadratic temporal phase modulation increases, non-quadratic spectral phase modulation decreases, and pulse compression with quadratic spectral phase tends to that with a flat spectral phase.

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Ke Wang, Kai Wang, and Ping Qiu "Spectral phase aberration and its influence on pulse compression in an actively modulated ultrafast laser system", Proc. SPIE 9357, Physics and Simulation of Optoelectronic Devices XXIII, 935705 (16 March 2015); https://doi.org/10.1117/12.2074993

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KEYWORDS

Phase modulation

Phase shift keying

Picosecond phenomena

Modulation

Laser systems engineering

Phase compensation

Modulators

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