Tunable infrared generation in KTA and applications |
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| Authors: | GC Bhar P Kumbhakar AK Chaudhary U Chatterjee |
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| Affiliation: | (1) Laser Laboratory, Physics Department, Burdwan University, 713 104 Burdwan, India;(2) Central Forensic Science Laboratory, 30-Gorachand Road, 700014 Calcutta, India |
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| Abstract: | Noncollinear difference frequency mixing of dye laser and Nd:YAG second harmonic (fundamental) radiation from a commercial laser system is employed for the generation of 2.7–5.3 μm (1.6–1.7 μm) radiations in a flux-grown KTiOAsO1 crystal. The generated radiation is used to scan the methane absorption in the fundamental (v 3) and its first overtone (2v 3) band at pressure 90 torr in a laboratory made single pass gas cell of length 33 cm. |
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| Keywords: | Nonlinear optics frequency conversion methane absorption |
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