Spectrometer using concave holographic diffraction grating

Details Spectrometer using concave holographic diffraction grating Spectrometer using concave holographic diffraction grating

1987-12-30

1989-03-28

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01J 318

Patent

active

048158496

ABSTRACT:
A spectrometer including a source of light, a slit member along the path of the light emitted from the source, a holographic, concave grating in the path of the light passing through the slit member, and a photodetector in the path of the diffracted light reflected from the grating. The photodetector is positioned substantially along the portion of the primary horizontal focal curve of the grating where it is intersected three times by a vertical focal curve of the grating. The three intersections being on the same side of the normal vector to the grating and two of the intersecting points being the positions of the laser used to form the grating.

REFERENCES:
patent: 4087183 (1978-05-01), Passereau
patent: 4279511 (1981-07-01), Maute et al.
patent: 4568187 (1986-02-01), Kita et al.
patent: 4623251 (1986-11-01), Pouey
Cordelle et al., "Aberration-Corrected Concave Gratings Made Holographically", Optical Instruments and Techniques, 1969, pp. 117-124 (Oriel Press, London).
H. Noda, et al., "Ray Tracing Through Holographic Gratings", Journal of the Optical Society of America, vol. 64, pp. 1037-1042, 1974.
W. McKinney, et al., "Numerical Design Method for Aberration-Reduced Concave Grating Spectrometers", Applied Optics, vol. 26, No. 15, 8/1/87.

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