Temperature measurements in an ytterbium fiber amplifier up to the mode instability threshold

F. Beier; M. Heinzig; Bettina Sattler; Till Walbaum; N. Haarlammert; T. Schreiber; R. Eberhardt; A. Tünnermann

doi:10.1117/12.2212423

11 March 2016 Temperature measurements in an ytterbium fiber amplifier up to the mode instability threshold

F. Beier, M. Heinzig, Bettina Sattler, Till Walbaum, N. Haarlammert, T. Schreiber, R. Eberhardt, A. Tünnermann

Proceedings Volume 9728, Fiber Lasers XIII: Technology, Systems, and Applications; 97282P (2016) https://doi.org/10.1117/12.2212423
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

We report on the measurement of the longitudinal temperature distribution in a fiber amplifier fiber during high power operation. The measurement signal of an optical frequency domain reflectometer is coupled to an ytterbium doped amplifier fiber via a wavelength division multiplexer. The longitudinal temperature distribution was examined for different pump powers with a sub mm resolution. The results show even small temperature variations induced by slight changes of the environmental conditions along the fiber. The mode instability threshold of the fiber under investigation was determined to be 480W and temperatures could be measured overall the measured output power values.

Citation Download Citation

F. Beier, M. Heinzig, Bettina Sattler, Till Walbaum, N. Haarlammert, T. Schreiber, R. Eberhardt, and A. Tünnermann "Temperature measurements in an ytterbium fiber amplifier up to the mode instability threshold", Proc. SPIE 9728, Fiber Lasers XIII: Technology, Systems, and Applications, 97282P (11 March 2016); https://doi.org/10.1117/12.2212423

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

Includes PDF, HTML & Video, when available