Cryogenically cooled Ti:sapphire amplifiers
Abstract
Cryogenic cooling of Ti:Sapphire is a well known technique for improving its thermal performance. In particular the improvement in thermal conductivity, temperature dependence of the index of refraction and thermal expansion around 77 K dramatically reduces the thermal lensing. This allows a significant increase in the possible pump power, while keeping a very good beam quality over a wider range of operation. As an example we demonstrate a single-stage regenerative amplifier that is capable of delivering compressed output powers of 7.5 W and 11.9 W at 1 and 5 kHz, respectively, as well as a multi-pass amplifier delivering 13.2 W at 1 kHz.
- Publication:
-
Solid State Lasers XVI: Technology and Devices
- Pub Date:
- February 2007
- DOI:
- 10.1117/12.707693
- Bibcode:
- 2007SPIE.6451E..0VH