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Author Katz, J. ♦ Boni, R. ♦ Rivlis, R. ♦ Muir, C. ♦ Froula, D. H.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ♦ APERTURES ♦ BALANCES ♦ BEAMS ♦ BUILDUP ♦ DIFFRACTION ♦ DIFFRACTION GRATINGS ♦ LENGTH ♦ OPTICAL SPECTROMETERS ♦ PULSES ♦ SPECTRA ♦ TIME RESOLUTION ♦ TUBES ♦ WAVELENGTHS
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.
ISSN 00346748
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-11-15
Publisher Place United States
Journal Review of Scientific Instruments
Volume Number 87
Issue Number 11


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