Cep-Stabilized, 1550Nm Femtosecond Laser by a Two-Stage Optical Parametric Amplifier
Chia-Lun Tsai1*, Yi-Hsun Tseng1, Chia-Hao Guo1, Wei-Hsin Wu1, Ming-Wei Lin2, Shang-Da Yang1, Ming-Chang Chen1
1Institute of Photonics and technologies, National Tsing Hua University, HsinChu, Taiwan
2Institute of Nuclear engineering and Science, National Tsing Hua University, HsinChu, Taiwan
* presenting author:Chia-Lun Tsai, email:tsaichalun@gmail.com
We built a two-stage optical parametric amplifier system seeded by white-light continuum, which produces passive CEP-stabilized, 1.55-μm pulses at 4 kHz with the pulse duration of 50 fs and an output energy of 10 μJ. It paves a route toward applications of biomedical imaging, molecular fingerprint, optical spectroscopy and ultrafast pump-probe excitation. It also serves as an ideal front-end laser that can subsequently seed an optical parametric chirp pulse amplifier, whereby the ultimately amplified pulses can be used to drive bright, water-window high order harmonic generation.

Keywords: optical parametric amlifier, ultrafast optics, nonlinear optics