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Proceedings Paper

Femtosecond optical parametric amplification in BBO and KTA driven by a Ti:sapphire laser for LIDT testing and diagnostic development
Author(s): Alexander R. Meadows; Josef Cupal; Petr Hříbek; Michal Ďurák; Daniel Kramer; Bedřich Rus
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Paper Abstract

We present the design of a collinear femtosecond optical parametric amplification (OPA) system producing a tunable output at wavelengths between 1030 nm and 1080 nm from a Ti:Sapphire pump laser at a wavelength of 795 nm. Generation of a supercontinuum seed pulse is followed by one stage of amplification in Beta Barium Borate (BBO) and two stages of amplification in Potassium Titanyle Arsenate (KTA), resulting in a 225 μJ output pulse with a duration of 90 fs. The output of the system has been measured by self-referenced spectral interferometry to yield the complete spectrum and spectral phase of the pulse. When compared to KTP, the greater transparency of KTA in the spectral range from 3 - 4 μm allows for reduced idler absorption and enhanced gain from the OPA process when it is pumped by the fundamental frequency of a Ti:sapphire laser. In turn, the use of the Ti:sapphire fundamental at 795 nm as a pump improves the efficiency with which light can be converted to wavelengths between 1030 nm and 1080 nm and subsequently used to test components for Nd-based laser systems. This OPA system is operated at 1 kHz for diagnostic development and laser-induced damage threshold testing of optical components for the ELI-Beamlines project.

Paper Details

Date Published: 11 May 2017
PDF: 10 pages
Proc. SPIE 10238, High-Power, High-Energy, and High-Intensity Laser Technology III, 102380E (11 May 2017); doi: 10.1117/12.2265009
Show Author Affiliations
Alexander R. Meadows, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Josef Cupal, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Petr Hříbek, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Michal Ďurák, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Daniel Kramer, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Bedřich Rus, Institute of Physics of the ASCR, v.v.i. (Czech Republic)


Published in SPIE Proceedings Vol. 10238:
High-Power, High-Energy, and High-Intensity Laser Technology III
Joachim Hein, Editor(s)

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