Open AccessInjection-seeded optical parametric amplifier for generating chirped nanosecond pulses
Author(s) -
Shinichirou Miyake,
Yasuhiro Ohshima
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.005269
Subject(s) - optical parametric amplifier , chirp , optics , materials science , regenerative amplification , optical amplifier , nanosecond , amplifier , phase modulation , chirped pulse amplification , population , laser , femtosecond , optoelectronics , physics , phase noise , cmos , demography , sociology
We constructed an optical parametric amplifier with BiBO crystals, which was injection seeded by a phase-modulated cw beam in the 1,040-1,070 nm region. Two-stage pre-amplification by Yb-doped fibers were implemented for stable injection to the OPA. The frequency chirp in the OPA pulse was actively controlled by adjusting the RF wave for the phase modulation and its synchronization to the OPA firing. Down/up chirps with up to 500 MHz shift were demonstrated. The output pulse energy was ~40 mJ, which is sufficient for future application of frequency conversion and coherent population transfer.