High average power amplification of femtosecond pulses based on the Yb:CaYAlO4 crystal.
Opt Express
; 31(8): 12212-12219, 2023 Apr 10.
Article
em En
| MEDLINE
| ID: mdl-37157385
ABSTRACT
In this paper, we demonstrated the direct amplification of femtosecond pulses with the YbCaYAlO4 crystal for the first time. A compact and simple two-stage amplifier delivered amplified pulses with the average powers of 55.4 W for σ-polarization and 39.4 W for π-polarization at the center wavelengthes of 1032â
nm and 1030â
nm, corresponding to 28.3% and 16.3% optical-to-optical efficiencies, respectively. These are to the best of our knowledge the highest value achieved with a YbCaYAlO4 amplifier. Upon using a compressor consisting of prisms and GTI mirrors, a pulse duration of 166-fs was measured. Thanks to the good thermal management, the beam quality (M2) parameters <1.3 along each axis were maintained in each stage.
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MEDLINE
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article