Course description
This course teaches methods of design, fabrications technoligies, and applications of non-conventional optical elements, including diffractive and micro-optical elements. The course will cover main types of optical elements, including diffraction gratings, microlens arrays, laser beam shapers, spot array generators, optical interconnects, subwavelength structures for anti-reflection and polarization control.
Course Topics:
Introduction: main ideas and types for diffractive optical elements.
Diffraction theory and geometrical optics in diffractive optics. Surface relief diffraction gratings.
Design approaches: regular diffractive grooves, transfer from refractive to diffractive lenses, diffraction efficiency and phase quantization.
Chromatic effects in diffractive optics.
Fabrication technologies: micro and nano thchnology from semiconductors to optics, mask generation and direct writing, lithography, diamond turning, laser ablation, replication, software, profile and performance measurements.
Diffractive lenses and aberration correction. Non-paraxial and astigmatic lenses, reduction of aberrations in multi-lens optical systems. Ophthalmic diffractive optics.
Laser beam shaping and focusing.
Holograms for testing aspherical surfaces in optical industry.
Beam splitting and multiple-order diffraction gratings. Microlens arrays.
Optical interconnects, photonic chips, planar optics.
Transverse mode selection.
Diffractive anti-reflection coatings and polarizing filters. Subwavelength and near to wavelength diffraction structures.
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