title: A pulse-front-tilt-compensated streaked optical spectrometer with high throughput and picosecond time resolution.
abstract: A high-throughput, broadband optical spectrometer coupled to the Rochester optical streak system equipped with a Photonis P820 streak tube was designed to record time-resolved spectra with 1-ps time resolution. Spectral resolution of 0.8 nm is achieved over a wavelength coverage range of 480 to 580 nm, using a 300-groove/mm diffraction grating in conjunction with a pair of 225-mm-focal-length doublets operating at an f/2.9 aperture. Overall pulse-front tilt across the beam diameter generated by the diffraction grating is reduced by preferentially delaying discrete segments of the collimated input beam using a 34-element reflective echelon optic. The introduced delay temporally aligns the beam segments and the net pulse-front tilt is limited to the accumulation across an individual sub-element. The resulting spectrometer design balances resolving power and pulse-front tilt while maintaining high throughput.
authors.affiliation: Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.
authors.forename: J
authors.initials: J
authors.lastname: Katz
authors.affiliation: Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.
authors.forename: R
authors.initials: R
authors.lastname: Boni
authors.affiliation: Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.
authors.forename: R
authors.initials: R
authors.lastname: Rivlis
authors.affiliation: Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623-1299, USA.
authors.forename: C
authors.initials: C
authors.lastname: Muir
authors.affiliation: Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.
authors.forename: D H
authors.initials: DH
authors.lastname: Froula