Mirror substrates for high-power YAG lasers

Rainer G. Schuhmann; Michael Schulz-Grosser; Dieter Froelich

doi:10.1117/12.130738

10 December 1992 Mirror substrates for high-power YAG lasers

Rainer G. Schuhmann, Michael Schulz-Grosser, Dieter Froelich

Proceedings Volume 1752, Current Developments in Optical Design and Optical Engineering II; (1992) https://doi.org/10.1117/12.130738
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

The use of partially transmitting mirrors for high-power laser radiation, especially in laser cavities, requires substrates with very high-quality surfaces to avoid laser damage. The damage can arise from local increase of electro-magnetic field strength and absorption in the thin film coating and in the bounding layer of the substrate material. Therefore, extremely fine polished surfaces are needed. For YAG-laser-application at 1064 nm mostly quartz materials are used which require optimized tooling and techniques for the polishing process. The optimization of this process is achieved by identification and subsequent systematic variation of the main polishing parameters. The resulting surfaces are tested with respect to micro- roughness, light scattering and laser damage threshold both for uncoated and coated substrates. It will be shown that the damage threshold of laser mirrors can be increased by more than 100% compared with conventionally produced surfaces. Extreme threshold values can reach the damage threshold of the pure substrate material.

Citation Download Citation

Rainer G. Schuhmann, Michael Schulz-Grosser, and Dieter Froelich "Mirror substrates for high-power YAG lasers", Proc. SPIE 1752, Current Developments in Optical Design and Optical Engineering II, (10 December 1992); https://doi.org/10.1117/12.130738

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
4 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polishing

Surface finishing

Mirrors

Coating

Laser damage threshold

Light scattering

Particles

Show All Keywords

Keywords/Phrases

Search In:

Publication Years