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Sum-frequency generation with a blue diode laser for mercury spectroscopy at 254 nm

Författare:
Publiceringsår: 2000
Språk: Engelska
Sidor: 1234-1236
Publikation/Tidskrift/Serie: Applied Physics Letters
Volym: 76
Nummer: 10
Dokumenttyp: Artikel

Sammanfattning

Blue diode lasers emitting 5 mW continuous-wave power around 400 nm have recently become available. We report on the use of a blue diode laser together with a 30 mW red diode laser for sum-frequency generation around 254 nm. The ultraviolet power is estimated to be 0.9 nW, and 35 GHz mode-hop-free tuning range is achieved. This is enough to perform high-resolution ultraviolet spectroscopy of mercury isotopes. The possibility to use frequency modulation in the ultraviolet is demonstrated; however, at present the ultraviolet power is too low to give advantages over direct absorption monitoring. Mercury detection at atmospheric pressure is also considered which is of great interest for environmental monitoring. (C) 2000 American Institute of Physics. [S0003-6951(00)02810-2].

Disputation

Nyckelord

  • Physics and Astronomy

Övriga

Published
Yes
  • ISSN: 0003-6951

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