Several watts compact CW green laser head without cooling by using PPMgSLT

Y. Tomihari; S. Makio; M. Hoshi; M. Hatori; J. Hirohashi; K. Imai; H. Motegi; Y. Furukawa

doi:10.1117/12.2003732

12 March 2013 Several watts compact CW green laser head without cooling by using PPMgSLT

Y. Tomihari, S. Makio, M. Hoshi, M. Hatori, J. Hirohashi, K. Imai, H. Motegi, Y. Furukawa

Proceedings Volume 8604, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XII; 860408 (2013) https://doi.org/10.1117/12.2003732
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

Several watts compact CW green laser head without any cooling is demonstrated by combining CW fiber laser and PPMgSLT. Since the conventional high power visible laser has huge heat sources at its laser head, it requires air or water cooling. In addition, the optical system, which is mounted this type of head, has sometime problems of optical stability caused by those heat sources from the head. The laser head we demonstrated has three input and output ports of the laser light; fiber input of fundamental light (1064nm) from CW fiber laser, SHG (532 nm) output into free space, and fiber output of residual fundamental laser light. The size of laser head was 110mm X 78mm X 64mm (550cc). More than 25W of CW fundamental light from single mode fiber was focused into 30mm-long PPMgSLT device operated at 40 degree C. The linewidth of the laser was 0.09 nm at FWHM. 5W of 532 nm light was generated from PPMgSLT. Because of high power durability of PPMgSLT, it could be easily realized several watts of visible light generation by simple singlepass configuration. Residual fundamental light was separated by harmonic separator and was coupled into large core multi-mode fiber. As a result, there are no remarkable heat sources at the laser head. The stable green light from this head was confirmed without any cooling at the laser head. Since this configuration doesn’t affect any thermal turbulence in surroundings, the stability of the optical system would be improved by using this laser head.

Citation Download Citation

Y. Tomihari, S. Makio, M. Hoshi, M. Hatori, J. Hirohashi, K. Imai, H. Motegi, and Y. Furukawa "Several watts compact CW green laser head without cooling by using PPMgSLT", Proc. SPIE 8604, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XII, 860408 (12 March 2013); https://doi.org/10.1117/12.2003732

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Lasers

Fiber lasers

Second-harmonic generation

Continuous wave operation

Head

Visible radiation

Connectors

Show All Keywords

Keywords/Phrases

Search In:

Publication Years