title: A four-pass high resolution spectrometer for the near infrared.
abstract: A high resolution Littrow type grating spectrometer designed for four-pass operation in the near ir is described. Using 20-cm gratings, four passed in first and second orders, this instrument achieves a spectral resolution between 0.015 cm(-1) and 0.025 cm(-l) in the l.9-micro to 3.6-micro region. This resolution is up to 40% better than that realized with the same system double passed.
authors.affiliation: Department of Physics, Florida State University, Tallahassee, Florida 32306, USA.
authors.forename: R H
authors.initials: RH
authors.lastname: Hunt
authors.forename: C W
authors.initials: CW
authors.lastname: Robertson
authors.forename: E K
authors.initials: EK
authors.lastname: Plyler