Experimental research on second harmonic generation conversion efficiency of the TEA CO2 laser

Deming Ren; Xiaoyong Hu; Yuhong Wang; Yanchen Qu

doi:10.1117/12.481793

5 September 2002 Experimental research on second harmonic generation conversion efficiency of the TEA CO₂ laser

Deming Ren, Xiaoyong Hu, Yuhong Wang, Yanchen Qu

Proceedings Volume 4914, High-Power Lasers and Applications II; (2002) https://doi.org/10.1117/12.481793
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Second harmonic generation of tunable TEA CO2 laser has the greatest potential for providing the coherent radiation in the wave range of 3~5µm which has many virtues. But the low conversion efficiency has restricted its wide application. In order to raise the conversion efficiency by lengthening the nonlinear effecting extent, two crystals were used which were placed in symmetrical position. In this way the beam can be compressed at the same time. In our experiment, the conversion efficiency up to I .5 times that of one crystal was achieved. Another factor that can affect the conversion efficiency was the quality of the pumping laser, so a plasma shutter was used to shape the laser pulse. Through the shutter the pulse energy was decreased but the pulse width was compressed accordingly, so the pump power was enhanced. By means of this, the conversion efficiency was improved from less than 2% to 12.9% and the highest output energy of 1 .44mJ has been achieved.

Citation Download Citation

Deming Ren, Xiaoyong Hu, Yuhong Wang, and Yanchen Qu "Experimental research on second harmonic generation conversion efficiency of the TEA CO₂ laser", Proc. SPIE 4914, High-Power Lasers and Applications II, (5 September 2002); https://doi.org/10.1117/12.481793

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