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2.70 mu m emission Er:Cr:YSGG laser with LiNbO3 Pockels cell
- Authors
- Park, Y. H.; Kong, H. J.; Kim, Y. S.; Kim, G. U.
- Issue Date
- Mar-2009
- Publisher
- IOP PUBLISHING LTD
- Keywords
- Er:Cr:YSGG; electro-optics Q-switch
- Citation
- LASER PHYSICS LETTERS, v.6, no.3, pp 198 - 202
- Pages
- 5
- Journal Title
- LASER PHYSICS LETTERS
- Volume
- 6
- Number
- 3
- Start Page
- 198
- End Page
- 202
- ISSN
- 1612-2011
1612-202X
- Abstract
- In this study, an electro-optically Q-switched 2.70 pm emission Er:Cr:YSGG laser with a LiNbO3 Pockels cell is investigated and compared with a FTIR Q-switched scheme. It can obtain nanosecond pulse at a low voltage of 1.4 kV using a CaF2 polarizer and a LiNbO3 crystal with Brewster's angle cut ends. Wavelength generation of 2.70 mu m was possible with a Fresnel loss at a rear mirror with a dielectric dichroic coating. The maximum output energy of 21.5 mJ (at 1 Hz repetition rate) was achieved in TEM21 mode using the output coupler with a reflectivity of 55% at 2.70 mu m. The generated maximum pulse energy and pulse width were 13.3 mJ and 159 ns in TEM00 mode, respectively The pulse width was shorter than 1.3 mu s of the FTIR Q-switched scheme.
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