Laser beam stability control based on differential compensation system

Hongwei Yang; Lidong Lu

doi:10.1117/12.2586755

15 January 2021 Laser beam stability control based on differential compensation system

Hongwei Yang, Lidong Lu

Proceedings Volume 11761, Fourth International Conference on Photonics and Optical Engineering; 117611A (2021) https://doi.org/10.1117/12.2586755
Event: Fourth International Conference on Photonics and Optical Engineering, 2020, Xi'an, China

Abstract

This paper proposes a differential compensation system with a differential optical path which is consisted of a pentaprism, a half-pentaprism and a beam splitter. This system can split the source laser beam into two equal and opposite laser beams without considering the thickness of the beam splitter. Thus the average of the positions of the two laser beams remains constant despite the laser beam dithering angle. Simulations verify the feasibility of this system in ideal situation. Furthermore, the compensation error is analyzed taking into account the thickness of the beam splitter. Theoretical analysis shows that the system error is within 6 μm. Monte Carlo simulation are then verified that the collimated laser beam dithering can be reduced within 7 μm considering the machining error of the parameters of the prisms and the system error. This system with advantages of compact structure, free from electro magnetic interference(EMI) and transplantation, is wildly used in one dimensional measurement fields especially for the compact and containment detecting setup.

Citation Download Citation

Hongwei Yang and Lidong Lu "Laser beam stability control based on differential compensation system", Proc. SPIE 11761, Fourth International Conference on Photonics and Optical Engineering, 117611A (15 January 2021); https://doi.org/10.1117/12.2586755

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