Search Results - Optics

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Ultralow SwaP Photonic Integrated Spectrometer
Background On-chip spectrometers pose many advantages over other types of state-of-the-art spectrometers, which typically consist of large and bulky free space optical components. Small chips significantly reduce size, weight, and power (SWaP) and contain no moving parts, may include radiation-hardened materials, are much easier to shield from radiation...
Published: 9/21/2022   |   Inventor(s): Jaime Cardenas, Xiaotong He
Category(s): Optics, Nanotechnology
SHG/Multiphoton System for Cancer Diagnosis, Prognosis, and Treatment Planning
­Background When a patient detects a lump in the breast or a screening mammogram detects a density, a core needle biopsy is performed and the resultant cylinder of tissue is traditionally sectioned, mounted on a slide, H+E stained, and viewed by a pathologist to determine if a patient has cancer versus something more benign. If cancer is diagnosed,...
Published: 8/8/2022   |   Inventor(s): Edward Brown III, David Hicks, Brandon Buscaglia, Bradley Turner, Robert Hill, Danielle Desa
Category(s): Surgical/Medical Device, Optics, Diagnostic
High-speed tuning soliton microcomb: Method and device to tune comb lines and repetition rate of on-chip soliton microcomb at extremely fast speed.
­Background Spectrally pure microwaves are essential for many applications ranging from wireless communication to radar, clocks, and high-speed electronics. Soliton microcombs—phase-locked Kerr frequency combs produced on a monolithic chip—have recently come to light as a promising technique for synthesizing microwaves owing to their...
Published: 8/5/2022   |   Inventor(s): Qiang Lin, Yang He
Category(s): Optics
Fiber-optic probe and corresponding optical system to detect, deliver, and analyze fluorescence in target tissue
­Background Photodynamic therapy (PDT) is a promising treatment modality for oncology and antimicrobial applications that relies on the excitation of light-sensitive drugs known as photosensitizers by visible light in order to generate reactive oxygen species. The efficacy of PDT is largely determined by the combination of the absorbed light dose...
Published: 7/21/2022   |   Inventor(s): Timothy Baran
Category(s): Optics, Surgical/Medical Device, Devices
A new type of integrated semiconductor laser that achieves ultrafast tuning and switching
Background Frequency tuning of laser sources in Photonic integrated circuits (PIC) has been based on thermal as well as current changes. Thermal-optic tuning is slow (kHz) and current sweep techniques lead to unwanted intensity modulation. PICs still lack ultra-fast frequency modulation and switching, an essential attribute for the wide adoption of...
Published: 8/5/2022   |   Inventor(s): Qiang Lin, Mingxiao Li
Category(s): Optics, Devices
Approach to designing refractive, presbyopia-correcting ophthalmic lenses with a large continuous DoF, independent of pupil size
Background Presbyopia is an ophthalmic condition wherein the eye loses the ability to focus clearly due to lens aging. It can significantly affect the quality of life. Since eventually, every person will inevitably develop this condition, it is important to find a solution to it. Currently, spectacle-free treatment can be achieved by using contact...
Published: 7/21/2022   |   Inventor(s): Geunyoung Yoon, Jiakai Lyu
Category(s): Optics
Novel contact lens and eyeglass designs to reduce, if not stop, myopia progression
Background Worldwide, children are developing myopia earlier in life which continues to worsen over time leading to additional visual impairment and sometimes blindness. While this trend of early, severe myopia progression started predominately in Asian countries, over the pandemic this phenomenon has been observed at greater rates worldwide. Although...
Published: 8/5/2022   |   Inventor(s): Geunyoung Yoon
Category(s): Optics
Rapid Assessment and Visual Reporting of Local Particle Velocity
This invention provides rapid determination of regional blood flow within a vessel over time. Building on our advances in adaptive optics ophthalmoscopy, we combine fast camera capture with high spatial resolution to resolve single blood cells moving within vessels of the eye. The invention provides a computational strategy to processes data in real-time...
Published: 6/1/2021   |   Inventor(s): Jesse Schallek, Keith Parkins, Aby Joseph
Category(s): Optics
Enhanced Contrast Imaging Using DMD Array as Confocal Filter
Background Traditionally, confocal imaging strategies use a small pinhole aperture at the imaging plane to reject scattered light and light that is out of focus from the optical plane of best focus. We describe a new imaging detection scheme that incorporates a digital micromirror device (DMD) at the imaging plane to provide a fast dynamic “synthetic...
Published: 8/5/2022   |   Inventor(s): Jesse Schallek, Raul Andres Guevara-Torres
Category(s): Diagnostic, Imaging, Optics
Method for directly measuring loss, polarization state, dispersion, and signal dynamics in photonic integrated circuits (PICs)
Background The state of the art in photonic circuit testing requires either cumbersome probes or requires fibers to be aligned to coupling locations at the edge of the die. It has been well known for some time that a sensitive microscope camera combination can detect even weakly scattered light from random defects in a photonic waveguide. However,...
Published: 12/13/2022   |   Inventor(s): Thomas Brown, Debra Saulnier, Tyler Howard
Category(s): Optics
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