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公开(公告)号：US20180356528A1
公开(公告)日：2018-12-13
申请号：US15947742
申请日：2018-04-06
发明人： James H. Schaffner , Richard M. Kremer , Raymond Sarkissian , Andrew C. Keefe , Pamela R. Patterson , Erik S. Daniel , Brian N. Limketkai , Guillermo A. Herrera , Keyvan R. Sayyah , Oleg M. Eimov
摘要： A continuous wave (CW) heterodyne light detection and ranging (LIDAR) air velocity sensor system that comprises a first light emitting structure arranged to send a signal light in a first direction in space; a second light emitting structure arranged to produce a local oscillator light having a wavelength different from the wavelength of the signal light by a predetermined wavelength; a receiver arranged to receive light from said first direction in space; and a first optical mixer for mixing the received light with said local oscillator light.
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公开(公告)号：US11988907B1
公开(公告)日：2024-05-21
申请号：US17212611
申请日：2021-03-25
CPC分类号： G02F1/0316 , G02F1/0333 , G02F1/19 , G02F2203/11
摘要： An electric field-controlled refractive index tunable device includes a phase change correlated transition metal oxide layer, and E-field responsive charge dopants. The E-field responsive charge dopants either accumulate in the phase change correlated transition metal oxide layer or are depleted from the phase change correlated transition metal oxide layer in response to an E-field applied to the phase change correlated transition metal oxide layer.
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公开(公告)号：US10928519B2
公开(公告)日：2021-02-23
申请号：US15947742
申请日：2018-04-06
发明人： James H. Schaffner , Richard M. Kremer , Raymond Sarkissian , Andrew C. Keefe , Pamela R. Patterson , Erik S. Daniel , Brian N. Limketkai , Guillermo A. Herrera , Keyvan R. Sayyah , Oleg M. Efimov
摘要： A continuous wave (CW) heterodyne light detection and ranging (LIDAR) air velocity sensor system that comprises a first light emitting structure arranged to send a signal light in a first direction in space; a second light emitting structure arranged to produce a local oscillator light having a wavelength different from the wavelength of the signal light by a predetermined wavelength; a receiver arranged to receive light from said first direction in space; and a first optical mixer for mixing the received light with said local oscillator light.
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公开(公告)号：US11314109B1
公开(公告)日：2022-04-26
申请号：US16663258
申请日：2019-10-24
摘要： A spatial light modulator cell and arrays of spatial light modulator cells are disclosed. The spatial light modulator cells can comprise a phase change material (PCM) having a first side and a second side; an optical reflector configured to reflect an optical beam passing from the first side to the second side; and a PCM heater thermal conductively coupled to the PCM, wherein thermal modulation of the PCM modulates a phase of the PCM which varies light transmission through the PCM. Methods of making spatial light modulator cells and arrays are also disclosed.
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公开(公告)号：US10295462B1
公开(公告)日：2019-05-21
申请号：US15445782
申请日：2017-02-28
发明人： Daniel Yap , Yuri Owechko , Richard M. Kremer , Shankar R. Rao
IPC分类号： G01J5/02 , G01N21/39 , G01N21/3563 , G01N21/31 , G01N21/27
摘要： A sensor system including a spectrometer with a light source having a plurality of selectable wavelengths, a controller for controlling the sensor system, for selecting wavelengths of illumination light produced by the light source, and for controlling the light source to illuminate a spatial location, a photodetector aligned to detect light received from the spatial location, a blind demixer coupled to the photodetector for separating received spectra in the detected light into a set of sample spectra associated with different demixed or partially demixed chemical components, a memory having a plurality of stored reference spectra, a non-blind demixer coupled to the blind demixer and to the memory for non-blind demixing of the sample spectra using the reference spectra, and a classifier coupled to the non-blind demixer for classifying the set of demixed sample spectra into chemical components using the reference spectra.
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公开(公告)号：US12116662B2
公开(公告)日：2024-10-15
申请号：US17890913
申请日：2022-08-18
发明人： Kyung-Ah Son , Jeong-Sun Moon , Hwa Chang Seo , Richard M. Kremer , Ryan G. Quarfoth , Jack A. Crowell , Mariano J. Taboada , Joshua M. Doria , Terry B. Welch
摘要： A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (≥450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (
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公开(公告)号：US11788183B2
公开(公告)日：2023-10-17
申请号：US17206927
申请日：2021-03-19
发明人： Kyung-Ah Son , Jeong-Sun Moon , Hwa Chang Seo , Richard M. Kremer , Ryan G. Quarfoth , Jack A. Crowell , Mariano J. Taboada , Joshua M. Doria , Terry B. Welch
摘要： A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (≥450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (
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