Varied-space grazing incidence gratings in high resolution scanning spectrometers
We discuss the dominant geometrical aberrations of a grazing incidence reflection grating and new techniques which can be used to reduce or eliminate them. Convergent beam geometries and the aberration correction possible with varied groove spacings are each found to improve the spectral resolution and speed of grazing incidence gratings. In combination, these two techniques can result in a high resolution (lambda/..delta..lambda > 10/sup 4/) monochromator or scanning spectrometer with a simple rotational motion for scanning wavelength or selecting the spectral band. 21 refs., 4 figs.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- LBL-22228; CONF-860316-12
- DOE Contract Number:
- Resource Type:
- Resource Relation:
- Conference: Topical meeting on short wave length coherent radiation, Monterey, CA, USA, 24 Mar 1986
- Research Org:
- Lawrence Berkeley Lab., CA (USA)
- Country of Publication:
- United States
- 47 OTHER INSTRUMENTATION; OPTICAL SPECTROMETERS; ENERGY RESOLUTION; GRATINGS; GEOMETRICAL ABERRATIONS; PERFORMANCE TESTING; MEASURING INSTRUMENTS; RESOLUTION; SPECTROMETERS; TESTING; 440300* - Miscellaneous Instruments- (-1989)
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