Applied Physics B

, Volume 74, Issue 4, pp 441–444

Sum frequency generation at 309 nm using a violet and a near-IR DFB diode laser for detection of OH

  • L. Corner
  • J.S. Gibb
  • G. Hancock
  • A. Hutchinson
  • V.L. Kasyutich
  • R. Peverall
  • G.A.D. Ritchie

DOI: 10.1007/s003400200810

Cite this article as:
Corner, L., Gibb, J., Hancock, G. et al. Appl Phys B (2002) 74: 441. doi:10.1007/s003400200810

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.

PACS: 42.68.Ca; 42.65.Ky

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • L. Corner
    • 1
  • J.S. Gibb
    • 1
  • G. Hancock
    • 1
  • A. Hutchinson
    • 1
  • V.L. Kasyutich
    • 1
  • R. Peverall
    • 1
  • G.A.D. Ritchie
    • 1
  1. 1.Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, UKGB