Peak power scaling in Tm doped fiber lasers to MW-level

Christian Gaida; Martin Gebhardt; Pankaj Kadwani; Lasse Leick; Jes Broeng; Lawrence Shah; Martin Richardson

doi:10.1117/12.2004467

22 March 2013 Peak power scaling in Tm doped fiber lasers to MW-level

Christian Gaida, Martin Gebhardt, Pankaj Kadwani, Lasse Leick, Jes Broeng, Lawrence Shah, Martin Richardson

Proceedings Volume 8601, Fiber Lasers X: Technology, Systems, and Applications; 86012Y (2013) https://doi.org/10.1117/12.2004467
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

In this manuscript we present our recent achievements utilizing thulium-doped photonic crystal fiber rods (PCF-rods) for lasing at 2 μm wavelength and their potential as high peak power amplifiers. Two PCF-rods with 65 μm and 80 μm core diameter were first separately characterized in CW laser oscillators. The rods were pumped with a 793 nm laser diode and produced more than 18 W output power with near diffraction limited beam quality and a slope efficiency of up to 27.8 %. Implementing an intracavity high reflectivity grating for lasing wavelength selection enabled a tuning range of 180 nm from 1810 nm to 1990 nm. Thereafter the PCF-rod with 80 μm core was used as an amplifier and produced similar output powers when seeded with up to 4 W at 1960 nm from a master oscillator power amplifier (MOPA). The slope efficiency in this case was reduced to 20.1 % mainly due to the center wavelength of 1960nm. We are in the process of characterizing these rods in a pulsed amplification configuration to surpass MW-level peak power with multi-mJ pulse energy.

Citation Download Citation

Christian Gaida, Martin Gebhardt, Pankaj Kadwani, Lasse Leick, Jes Broeng, Lawrence Shah, and Martin Richardson "Peak power scaling in Tm doped fiber lasers to MW-level", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86012Y (22 March 2013); https://doi.org/10.1117/12.2004467

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