title: Long-term temporal and scanning characteristics of a double-beam diode-laser spectrometer.
abstract: A diode-laser dual-beam spectrometer using reflective optics and a special lock-in amplifier has a 100 +/- 0.25% base line flatness and a long-term base line drift of <0.25%. The system is highly immune to fringe interference occurring before the ratioing system.
authors.forename: R S
authors.initials: RS
authors.lastname: Eng
authors.forename: C
authors.initials: C
authors.lastname: Simpson
authors.forename: A W
authors.initials: AW
authors.lastname: Mantz
authors.forename: C G
authors.initials: CG
authors.lastname: Venkatesh