Journal Article10.1364/AO.57.008861
Optimization method of multilayer diffractive optical elements with consideration of ambient temperature
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TL;DR: A method for the optimal design of multilayer diffractive optical elements (MLDOEs) with consideration of ambient temperature is presented to improve the image quality over the entire temperature range, and the comprehensive modulation transfer function is obviously improved in the whole working temperature range.
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Abstract: A method for the optimal design of multilayer diffractive optical elements (MLDOEs) with consideration of ambient temperature is presented to improve the image quality over the entire temperature range. The relationship between diffraction efficiency and temperature is analyzed, and an optimization process of surface relief height for the MLDOEs is given. A practical 3–5 μm athermal hybrid optical system with a double-layer diffractive optical element is designed in the temperature range from −20°C to 60°C, and the image quality of two hybrid optical systems with optimized MLDOE and original MLDOE is compared. The result shows that the comprehensive modulation transfer function is obviously improved in the whole working temperature range. This method can be used during the passive athermalization hybrid optical system design with MLDOEs.
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References
Spectral properties of multiorder diffractive lenses
Dean Faklis,G. Michael Morris +1 more
TL;DR: It is shown that blazing the surface-relief diffractive lens for higher diffraction orders enables the design of achromatic and apochromatic singlets and the wavelength-dependent optical transfer function and the associated Strehl ratio are derived for multiorder diffractive lenses.
Harmonic diffractive lenses
TL;DR: The harmonic diffractive lens is a diffractive imaging lens for which the optical path-length transition between adjacent facets is an integer multiple m of the design wavelength λ(o).
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Effects of diffraction efficiency on the modulation transfer function of diffractive lenses
TL;DR: The integrated efficiency is shown to be the limiting value for the optical transfer function; in most cases it serves as an overall scale factor for the transfer function.
Influence of temperature on diffractive lens performance.
TL;DR: The optothermal expansion coefficient is used to design athermalized lenses that combine refractive and diffractive surfaces and useful design equations are presented that describe focal length, phase coefficients, and diffraction efficiency as functions of temperature.
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Design of multilayer diffractive optical elements with polychromatic integral diffraction efficiency.
Changxi Xue,Qingfeng Cui +1 more
TL;DR: What the authors believe to be a new method for designing multilayer diffractive optical elements for wideband with consideration of polychromatic integral diffraction efficiency (PIDE) is presented and the maximum PIDE over the entire waveband for MLDOEs can be obtained.
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