This course provides an overview of the various design and fabrication techniques available to the optical engineer for micro / nano optics, diffractive optics and holographic optics. Emphasis is put on DFM (Design For Manufacturing) for wafer scale fabrication, Diamond Turning Machining (DTM) and holographic origination. The course shows how design techniques can be tailored to address specific fabrication techniques' requirements and production equipment constraints. The course also addresses various current application fields as in display, imaging, sensing and metrology. :: It is built around 4 sections: (1) design, (2) modeling, (3) fabrication/mass production and (4) application fields. 1) The course reviews various design techniques used in standard optical CAD tools such as Zemax and CodeV to design Diffractive Optical Elements (DOEs), Micro-Lens Arrays (MLAs), hybrid optics and refractive micro-optics, Holographic Optical Element (HOE), as well as numerical design techniques for Computer Generated Holograms (CGHs). 2) Modeling single micro optics or complex micro-optical systems including MLAs, DOEs, HOEs, CGHs, and other hybrid elements can be a difficult task when using classical ray tracing algorithms. We review techniques using physical optics propagation to model all diffraction effects, along with systematic or random fabrication errors, multi-order propagation and other effects which cannot be modeled accurately through ray tracing. 3) Following the design (1) and modeling tasks (2), the optical engineer needs to perform a DFM process so that the resulting design can be fabricated by the desired manufacturing partner/vendor over a specific equipment. We will review such DFM for wafer fab via optical lithography (tape-out process), single point diamond turning (SPDT), or holographic recording specification. The course also reviews fracturing techniques to produce GDSII layout files for specific lithographic fabrication techniques and manufacturing equipment. 4) This section reviews current application fields for which micro-optics are providing an especially good match, quasi impossible to implement through traditional optics, such as depth mapping sensing (structured illumination based sensor) and augmented reality display (waveguide grating combiner optics). Applications examples in high resolution incremental/absolute optical encoders are also reviewed. Design and modeling techniques will be described for such applications fields, and optical hardware sub-system implementations and micro-optic elements will be shown and demonstrated at the end of the course.
This course provides an overview of the various design and fabrication techniques available to the optical engineer for micro / nano optics, diffractive optics and holographic optics. Emphasis is put on DFM (Design For Manufacturing) for wafer scale fabrication, Diamond Turning Machining (DTM) and holographic origination. The course shows how design techniques can be tailored to address specific fabrication techniques' requirements and production equipment constraints. The course also addresses various current application fields as in display, imaging, sensing and metrology. :: It is built around 4 sections: (1) design, (2) modeling, (3) fabrication/mass production and (4) application fields. 1) The course reviews various design techniques used in standard optical CAD tools such as Zemax and CodeV to design Diffractive Optical Elements (DOEs), Micro-Lens Arrays (MLAs), hybrid optics and refractive micro-optics, Holographic Optical Element (HOE), as well as numerical design techniques for Computer Generated Holograms (CGHs).
2) Modeling single micro optics or complex micro-optical systems including MLAs, DOEs, HOEs, CGHs, and other hybrid elements can be a difficult task when using classical ray tracing algorithms. We review techniques using physical optics propagation to model all diffraction effects, along with systematic or random fabrication errors, multi-order propagation and other effects which cannot be modeled accurately through ray tracing.
3) Following the design (1) and modeling tasks (2), the optical engineer needs to perform a DFM process so that the resulting design can be fabricated by the desired manufacturing partner/vendor over a specific equipment. We will review such DFM for wafer fab via optical lithography (tape-out process), single point diamond turning (SPDT), or holographic recording specification. The course also reviews fracturing techniques to produce GDSII layout files for specific lithographic fabrication techniques and manufacturing equipment.
4) This section reviews current application fields for which micro-optics are providing an especially good match, quasi impossible to implement through traditional optics, such as depth mapping sensing (structured illumination based sensor) and augmented reality display (waveguide grating combiner optics). Applications examples in high resolution incremental/absolute optical encoders are also reviewed. Design and modeling techniques will be described for such applications fields, and optical hardware sub-system implementations and micro-optic elements will be shown and demonstrated at the end of the course.
