OH sensor based on ultraviolet, continuous-wave absorption spectroscopy utilizing a frequency-quadrupled, fiber-amplified external-cavity diode laser. Academic Article uri icon


  • The development of an all-solid-state cw laser system for optical absorption measurements of the OH radical in the UV spectral range is described. The tunable output of a 1064-nm external-cavity diode laser is amplified by use of a Nd:doped, double-clad fiber amplifier. The amplified near-IR radiation is frequency doubled by a periodically poled lithium niobate crystal and then quadrupled in a beta-barium borate crystal. The design and operation of the system and measurements of OH absorption in the (2, 0) band of the A(2)?(+)- X(2)? electronic transition are discussed.

published proceedings

  • Opt Lett

author list (cited authors)

  • Ray, G. J., Anderson, T. N., Caton, J. A., Lucht, R. P., & Walther, T.

citation count

  • 13

complete list of authors

  • Ray, GJ||Anderson, TN||Caton, JA||Lucht, RP||Walther, T

publication date

  • January 2001