- Abstract:
- We have used a violet diode laser at 404 nm and a distributed feedback diode laser at 1320 nm to produce 0.8 nW of radiation at 309 nm by sum frequency generation in beta-barium borate. The UV radiation was tuned mode-hop-free over 30 GHz and used to detect OH radicals produced in a microwave discharge. By chopping the UV light at 500 Hz, we observed a concentration of 2 × 1012 cm-3 with a signal to noise ratio of 30:1.
- Publication status:
- Published
- Publisher copy:
- 10.1007/s003400200810
-
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- Journal:
- APPLIED PHYSICS B-LASERS AND OPTICS
- Volume:
- 74
- Issue:
- 4-5
- Pages:
- 441-444
- Publication date:
- 2002-04-05
- DOI:
- EISSN:
-
1432-0649
- ISSN:
-
0946-2171
- URN:
-
uuid:4ce0820a-9a9f-4db6-bfe4-879dce898d93
- Source identifiers:
-
38254
- Local pid:
- pubs:38254
- Language:
- English
- Copyright date:
- 2002
Journal article
Sum frequency generation at 309 nm using a violet and a near-IR DFB diode laser for detection of OH
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