Thin-Disk Yb:YAG Oscillator-Amplifier Laser, ASE, and Effective Yb:YAG Lifetime
Antonigni, Aldo and Schuhmann, Karsten and Amaro, Fernando and Biraben, Francois and Dax, Andreas and Giesen, Adolf and Graf, Thomas and Hänsch, Theodor and Indelicato, Paul and Julien, Lucile and Kao, Cheng-Yang and Knowles, Paul and Kottmann, Franz and Le Bigot, Eric and Liu, Yi-Wei and Ludhova, Livia and Moschüring, Niels and Mulhauser, Francoise and Nebel, Tobias and Nez, Francois and Rabinowitz, Paul and Schwob, Catherine and Taqqu, David and Pohl, Randolf (2009) Thin-Disk Yb:YAG Oscillator-Amplifier Laser, ASE, and Effective Yb:YAG Lifetime. IEEE Journal of Quantum Electronics, 45 (8), pp. 993-1005. DOI: DOI:10.1109/JQE.2009.2014881.
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We report on a thin-disk Yb:YAG laser made from a Q-switched oscillator and a multipass amplifier delivering pulses of 48 mJ at 1030 nm. The peculiar requirements for this laser are the short delay time (< 500 ns) between electronic trigger and optical output pulse and the time randomness with which these triggers occur (with trigger to next trigger delay ges 1.5 ms). Details concerning the oscillator dynamics (-switching cycle, intensity stabilization), and the peculiar amplifier layout are given. Simulations of the beam propagation in the amplifier based on the Collins integral and the measured aspherical components of the disk reproduce well the measured beam intensity profiles (with higher order intensity moments) and gains. Measurements of the thermal lens and ASE effects of the disk are also presented. A novel method to deduce the effective Yb:YAG upper state lifetime (under real laser operation and including ASE effects) is presented. That knowledge is necessary to determine gain and stored energy in the active medium and to understand the limiting factors for energy scaling of thin-disk lasers.
|Title:||Thin-Disk Yb:YAG Oscillator-Amplifier Laser, ASE, and Effective Yb:YAG Lifetime|
|Date:||08 August 2009|
|Journal or Publication Title:||IEEE Journal of Quantum Electronics|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 993-1005|
|Keywords:||Amplified spontaneous emission (ASE), Collins integral, diode-pumped laser, effective Yb:YAG lifetime, multipass amplifier, oscillator, prelasing, thermal lens, thin-disk laser|
|HGF - Research field:||no assignement|
|HGF - Program:||no assignment|
|HGF - Program Themes:||no assignment|
|DLR - Research area:||no assignement|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||other|
|Institutes and Institutions:||Institute of Technical Physics|
|Deposited By:||Dr.rer.nat. Hans-Albert Eckel|
|Deposited On:||25 Nov 2009 11:52|
|Last Modified:||26 Feb 2013 15:00|
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