Design and fabricate large scale gold coated pulse compression grating for Ti: sapphire laser

Chaoming Li; Xinrong Chen; Jianhong Wu; Zenghu Chang

doi:10.1117/12.2073548

18 November 2014 Design and fabricate large scale gold coated pulse compression grating for Ti: sapphire laser

Chaoming Li, Xinrong Chen, Jianhong Wu, Zenghu Chang

Proceedings Volume 9266, High-Power Lasers and Applications VII; 92661K (2014) https://doi.org/10.1117/12.2073548
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

Large scale and broadband pulse compression grating which is used in the femtosecond Ti: sapphire laser is studied. The line density of gold coated pulse compression grating is 1740lp/mm. The working wavelength of gold coated grating is from 700nm to 900nm and its deviation angle is 16.6 degree(@800nm). By using rigorous coupled wave theory, a series of calculation results with different profiles of gold coated pulse compression grating, such as rectangular, sinusoid, semi-sinusoid, are discussed in this paper. In order to get high diffraction efficiency throughout the whole working band, the duty cycle of grating should be more than 0.5 for the rectangular or semi-sinusoidal profile of groove. Duty cycle of grating causes the diffraction efficiency to change quickly at the short wavelength. By using holographic recording method, the gold coated pulse compression gratings with the aperture of 200mm×400mm have been fabricated. The gratings exhibit -1st order diffraction efficiency in excess of 94%(TM@808nm).

Citation Download Citation

Chaoming Li, Xinrong Chen, Jianhong Wu, and Zenghu Chang "Design and fabricate large scale gold coated pulse compression grating for Ti: sapphire laser", Proc. SPIE 9266, High-Power Lasers and Applications VII, 92661K (18 November 2014); https://doi.org/10.1117/12.2073548

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