Journal of Synthetic Crystals, Volume. 49, Issue 8, 1517(2020)
Growth and Optical Parametric Oscillator Properties of High Quality CdSe Single Crystal
High quality CdSe single crystal, with the sizes of 54 mm in diameter and 25 mm in length, was successfully grown by a high pressure vertical gradient freeze (HPVGF) technique using seed. The full width at half maximum (FWHM) of (002) and (110) X-ray rocking curves of the CdSe crystal with wurtzite structure are 54.4 arcsec and 45.6 arcsec respectively. The results show that there are some small-size Se inclusions in CdSe crystal by the test of infrared microscope and SEM-EDS. The transmission spectra show that the infrared transmission is above 68% and the mean absorption coefficient is 0.037 cm-1 in the range of 2.5-20 μm. Using fabricated type II CdSe crystal with the dimensions of 10 mm×12 mm×50 mm, we demonstrated an optical parametric oscillator (OPO) pumped by a 2.09 μm acoustooptic Q-switched Ho∶YAG laser at a pulse repetition frequency of 1 kHz. Up to 389 mW output is obtained at the idler wavelength of 11.47 μm with a linewidth of 33.2 nm.
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LI Baozhu, GAO Yanzhao, WANG Jian, CHENG Hongjuan, CHEN Yi, YAO Baoquan. Growth and Optical Parametric Oscillator Properties of High Quality CdSe Single Crystal[J]. Journal of Synthetic Crystals, 2020, 49(8): 1517
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Published Online: Nov. 11, 2020
The Author Email: Jian WANG (tiandawj@163.com)
CSTR:32186.14.