title: Narrow-band, tunable, semiconductor-laser-based source for deep-UV absorption spectroscopy.
abstract: Tunable, narrow-bandwidth (<200-MHz), ~215-nm radiation was produced by frequency quadrupling the ~860-nm output of a high-power, pulsed GaAlAs tapered amplifier seeded by an external-cavity diode laser. Pulsing the amplifier increased the 860 nm?215 nm conversion efficiency by 2 orders of magnitude with respect to cw operation. Detection of nitric oxide and sulfur dioxide by high-resolution absorption spectroscopy was demonstrated.
authors.forename: D A
authors.initials: DA
authors.lastname: Kliner
authors.forename: J P
authors.initials: JP
authors.lastname: Koplow
authors.forename: L
authors.initials: L
authors.lastname: Goldberg