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Design Of A Grating Spectrometer From A 1:1 Offner Mirror System
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1987
Year
Optical MaterialsEngineeringA 1:1Optic DesignOptical TestingA Grating SpectrometerOffner Mirror SystemCalibrationOptical PropertiesActive OpticsInfrared OpticInstrumentationOptical SystemsSecondary Convex MirrorGraded-reflectivity MirrorsGratingsAdaptive OpticSpectroscopyOptoelectronicsHolographic Optical Element
A 1:1 Offner mirror system is modified to work as a grating spectrometer for the infrared by placing a grating on the secondary convex mirror of the system. Slight adjustment of the configuration combined with tilt of the secondary provide the necessary degrees of freedom to correct for astigmatism of the system. Additional control may be obtained by using a holographic optical element (HOE), constructed to add necessary compensating aberrations. Details of the best configuration and the limitations of performance are presented.