High precision and fast measurement techniques of structural defects for large laser optics

Shijie Liu; Kaizao Ni; Shenghao Wang; Weiwei Wang; Weixiang Yang; Lanqing Li; Yun bo Bai; Rong Su; Jianda Shao

doi:10.1117/12.2654888

15 December 2022 High precision and fast measurement techniques of structural defects for large laser optics

Shijie Liu, Kaizao Ni, Shenghao Wang, Weiwei Wang, Weixiang Yang, Lanqing Li, Yun bo Bai, Rong Su, Jianda Shao

Proceedings Volume 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022); 124783Y (2022) https://doi.org/10.1117/12.2654888
Event: Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 2022, Xi'an, China

Abstract

Large optics are the key components of high power laser systems. The defects existing on the surface, under the surface and in the bulk are the main limitation to improve the output power of high power laser systems. The structural defects with micron or sub-millimeter size include surface scratches, digs, subsurface crack, bulk inclusions and bubbles, which are required to be removed during the manufacturing processes. The measurement precision and efficiency are the main challenges of developing novel measurement techniques due to their small size and random distribution on the surface with meter in length and within the materials with centimeters in depth. This paper presents our recent progress of measurement techniques based on laser scattering technique and microscopy for structural defects measurement of large optics. The laser scattering technique can quickly find the positions of these defects both on the surface and within the material. The microscopy is employed to precisely measure the size of the defects. The measurement strategy can not only improve the measurement efficiency but also obtain a considerable precision. Finally, the applications of these developed techniques for Nd-glass, laser crystals, optical coatings will also be presented, which has provided useful information both for manufacturing processes but also for laser systems design.

Citation Download Citation

Shijie Liu, Kaizao Ni, Shenghao Wang, Weiwei Wang, Weixiang Yang, Lanqing Li, Yun bo Bai, Rong Su, and Jianda Shao "High precision and fast measurement techniques of structural defects for large laser optics", Proc. SPIE 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 124783Y (15 December 2022); https://doi.org/10.1117/12.2654888

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
14 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Light scattering

Laser scattering

Optics manufacturing

Scattering

Glasses

Crystals

Optical components

Show All Keywords

Keywords/Phrases

Search In:

Publication Years