Search Results - Optics

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Absolute Linear-in-K Spectrometer Using Freeform Optics
We present an optical design method and solutions of linear-in-k spectrometers exhibiting extremely low residual nonlinearity (< 10E-4%) made possible by the inclusion of a freeform optics. Previous work in the literature shows that hardware-based solutions for k-linearization by adding a prism after the grating have residual non-linearity. The merit...
Published: 11/15/2019   |   Inventor(s): Jannick Rolland, Aaron Bauer, Changsik Yoon
Keywords(s):  
Category(s): Optics, Devices
(CeFO) Cascade Fourier Domain Optical Coherence Tomography for the Metrology of Optical Components Including Freeform
A cascaded interferometric system for Fourier domain optical coherence tomography (OCT) in which the output of one sub-system interferometer is directed through a second sub-system interferometer for performing the Fourier transform in hardware.
Published: 11/14/2019   |   Inventor(s): Jannick Rolland, Di Xu
Keywords(s):  
Category(s): Optics
Flying Focus: Spatiotemporal Control of the Laser Focus
Methods and systems are disclosed for using a chromatic lens system to provide a “flying focus”—i.e., an advanced focusing scheme enabling spatiotemporal control of a focal location. In a method, a photon beam is emitted from a source at a wavelength. The photon beam may have more than one wavelength. The photon beam is focused to...
Published: 11/14/2019   |   Inventor(s): Terrance Kessler, Dustin Froula
Keywords(s):  
Category(s): Optics
maging spectrometer with freeform surfaces
"Expanded performance opportunities for imaging spectrometers are described using ϕ-polynomial freeform surfaces in reflective and diffractive optics. The imaging spectrometers are generally of a type that include an entrance aperture for admitting radiation over a range of wavelengths, a detector array, a primary reflective optic with optical...
Published: 11/14/2019   |   Inventor(s): Jannick Rolland, Jacob Reimers
Keywords(s):  
Category(s): Optics
Freeform and Nanostructured Surfaces Based Augmented Reality Sunglass Display
A near eye display includes at least one of a combiner, a secondary mirror, and a waveguide having a freeform nanostructured surface. The freeform nanostructured surface encompasses a freeform surface, a nanostructured surface or a combination of both the freeform surface and the nanostructured surface. The freeform nanostructured surface can be incorporated...
Published: 11/14/2019   |   Inventor(s): Jannick Rolland, Nick Vamivakas, Alexander Kitt, Aaron Bauer
Keywords(s): Nano-optics, Optical Network
Category(s): Optics, Nanotechnology, Imaging
An Imaging Spectrometer Apparatus with Freeform Optics
A full-field display for spectrally dispersive imaging optics, particularly as a design tool for evaluating optical designs including designs with freeform optical surfaces, includes a ray tracing module arranged for modeling local aberrations throughout the image field of the spectrometer and a display module that converts values of the modeled local...
Published: 11/14/2019   |   Inventor(s): Jannick Rolland, Jacob Reimers
Keywords(s):  
Category(s): Optics
Method and Apparatus for Narrowing the Spectral Emission from High-Power Laser Diodes
Methods and apparatus for spectral narrowing and wavelength stabilization of broad-area lasers, such as an apparatus including a broad-area laser source configured to emit light along an emission axis in an emission pattern extending along the emission axis, and a single-mode fiber Bragg grating, such as a single-mode core incorporating a fiber Bragg...
Published: 11/14/2019   |   Inventor(s): John Marciante, Jordan Palmer Leidner
Keywords(s):  
Category(s): Optics
Focused Beam Scatterometry For Semiconductor Metrology
The capacity to measure nanoscale features rapidly and accurately is of central importance for the monitoring of manufacturing processes in the production of computer integrated circuits. It is known that far-field scattered light requires a priori sample information in order to reconstruct nanoscale information such as is required in semiconductor...
Published: 11/14/2019   |   Inventor(s): Miguel Alonso Gonzalez, Stephen Head, Michael Theisen, Thomas Brown
Keywords(s):  
Category(s): Nanotechnology, Optics
Method and Apparatus for Efficient Lasing of Lambda-Type Three-Level Laser Systems
Laser signal intensity is resonantly enhanced within a laser cavity to be greater than a pump intensity. This enables the suppression of excited-state absorption and is applicable to terbium-doped fiber lasers, lambda-type materials, or other materials used in lasers. In other embodiments, ESA is suppressed by de-populating the higher excited state...
Published: 11/14/2019   |   Inventor(s): John Marciante, Haomin Yao
Keywords(s):  
Category(s): Optics
Balanced, Periodic Error Free, Three Degree of Freedom Interferometer
Technology SummaryThis interferometric technology is able to measure tip/tilt and global displacement of a small target mirror (a few mm^2) using only one optical beam. Other interferometric systems require a much larger footprint on the target to measure a single axis of displacement. This means that to measure displacement, tip, and tilt, three identical...
Published: 10/25/2019   |   Inventor(s): Jonathan Ellis, Josephus Spronck
Keywords(s):  
Category(s): Optics
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