论文信息 - Development of a closed-loop cryogenically cooled sub-picosecond regenerative amplifier

Development of a closed-loop cryogenically cooled sub-picosecond regenerative amplifier

We are developing joule level picosecond pulse duration laser system operating at repetition rate of 120 Hz. The laser system consists of a seed mode-locked fiber laser and two cryogenically cooled amplifier stages: a single slab regenerative amplifier and a single slab multi-pass amplifier. We have found the displacement of the probe beam caused by mechanical vibrations of the cryostat is less than 0.7 mrad. We have also improved our in-situ gain measurement system by decreasing the spectral line of the narrow band source down to 50 pm. We have found that the emission bandwidth of Yb:YGAG at 160 K is around 7 nm.

[1] T. Mocek,et al. High-energy picosecond light source based on cryogenically conduction cooled Yb-doped laser amplifier , 2014, Photonics West - Lasers and Applications in Science and Engineering.

[2] Jorge J. Rocca,et al. 1 Joule, 100 Hz repetition rate, picosecond CPA laser for driving high average power soft x-ray lasers , 2014, 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications.

[3] Sheldon Wu,et al. Design of narrow-band Compton scattering sources for nuclear resonance fluorescence , 2011 .

[4] M. Pittman,et al. Technical Design Report EuroGammaS proposal for the ELI-NP Gamma beam System , 2014 .

[5] Antonio Lucianetti,et al. Spectroscopic and lasing characteristics of Yb:YGAG ceramic at cryogenic temperatures , 2015 .

[6] Ferenc Krausz,et al. Development of a Joule‐class Yb:YAG amplifier and its implementation in a CPA system generating 1 TW pulses , 2014 .

[7] Danijela Rostohar,et al. Overview of the HiLASE project: high average power pulsed DPSSL systems for research and industry , 2014, High Power Laser Science and Engineering.