A 400W cryogenic Er:YAG laser at 1645 nm

Scott D. Setzler; Michael J. Shaw; Mark J. Kukla; Josef R. Unternahrer; Kenneth M. Dinndorf; James A. Beattie; Evan P. Chicklis

doi:10.1117/12.855614

4 May 2010 A 400W cryogenic Er:YAG laser at 1645 nm

Scott D. Setzler, Michael J. Shaw, Mark J. Kukla, Josef R. Unternahrer, Kenneth M. Dinndorf, James A. Beattie, Evan P. Chicklis

Author Affiliations +

Proceedings Volume 7686, Laser Technology for Defense and Security VI; 76860C (2010) https://doi.org/10.1117/12.855614
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

We report on the design and characterization of a cryogenically cooled, resonantly pumped Er:YAG slab laser operating at 1645 nm. The Er:YAG slab is conductively cooled by liquid nitrogen and face-pumped by a 1.4 kW diode array operating at 1452 nm. The slab is transversely extracted in a highly multi-mode oscillator, producing 386 W of cw output power and 420 W of quasi-cw power at 50% duty cycle. We have measured 45% slope efficiency and 39% optical conversion efficiency (relative to incident pump). The laser has also been configured to operate with low-order multi-mode output, producing over 250 W of quasi-cw power at 25% duty cycle, and has been Q-switched at repetition rates as low as 10 kHz.

Citation Download Citation

Scott D. Setzler, Michael J. Shaw, Mark J. Kukla, Josef R. Unternahrer, Kenneth M. Dinndorf, James A. Beattie, and Evan P. Chicklis "A 400W cryogenic Er:YAG laser at 1645 nm", Proc. SPIE 7686, Laser Technology for Defense and Security VI, 76860C (4 May 2010); https://doi.org/10.1117/12.855614

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE