Microchip Nd:YAG laser for safe laser applications

Helena Jelínková; Jan Šulc D.D.S.; Michal Němec; Petr Koranda; Jiří Pašta; Karel Nejezchleb; Václav Škoda

doi:10.1117/12.717094

27 February 2007 Microchip Nd:YAG laser for safe laser applications

Helena Jelínková, Jan Šulc D.D.S., Michal Němec, Petr Koranda, Jiří Pašta, Karel Nejezchleb, Václav Škoda

Proceedings Volume 6451, Solid State Lasers XVI: Technology and Devices; 64510R (2007) https://doi.org/10.1117/12.717094
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

Abstract

For many applications, like micromanufacturing, remote sensing, data storage, etc. a microchip Nd:YAG laser is suitable. From the measurement of the laser radiation transmission through the eye tissue is evident that the injury probability of the retina is higher for the case of 1064 nm instead of 1338 nm. The main reason for that is the radiation water absorption. The Q-switched diode pumped (at 808 nm) microchip laser emitting radiation at wavelength 1338 nm was designed and realized. This laser was based on diffusion bonded crystal (diameter 5 mm) which combines in one piece the laser active part (Nd:YAG, 4 mm long) and saturable absorber (V:YAG, 0.7 mm, T₀ = 85%). The microchip resonator mirrors were deposited directly on the bonded crystal surfaces, output coupler reflexivity was 90%. The constructed "alignment-free" Q-switched microchip laser was tested under pulsed, and CW diode pumping. In both cases, the generated pulse energy, pulse length, emission wavelength, polarization, and laser beam profile were measured. The energy up to 18.6 &mgr;J in 1.7 ns long pulses was reached at the wavelength 1338 nm. TEM₀₀ laser mode was linearly polarized. The interaction of the radiation from the near- and mid-infrared region with the eye tissue was investigated and as conclusion the microchip with the wavelength 1338 nm was chosen as a good compromise between the eye safe 1.5 &mgr;m radiation and commonly, in the application used, 1.06 &mgr;m radiation.

Citation Download Citation

Helena Jelínková, Jan Šulc D.D.S., Michal Němec, Petr Koranda, Jiří Pašta, Karel Nejezchleb, and Václav Škoda "Microchip Nd:YAG laser for safe laser applications", Proc. SPIE 6451, Solid State Lasers XVI: Technology and Devices, 64510R (27 February 2007); https://doi.org/10.1117/12.717094

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