公开(公告)号：US20170074786A1

公开(公告)日：2017-03-16

申请号：US15359296

申请日：2016-11-22

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Frank T. Hartley

IPC: G01N21/35

CPC classification number: G01N21/35 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/18 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/1213 ,  G01N21/3577

Abstract: MIR spectroscopy systems comprising hierarchical spectral dispersion that enables fine spectral resolution and high sensitivity spectroscopy are disclosed. Hierarchical spectral dispersion is derived by employing at least two diffractive lens arrays, located on either side of a test sample, each receiving input radiation having an input spectral range and distributing the input radiation into a plurality of output signals, each having a fraction of the spectral range of the input radiation. As a result, the signal multiplication factor of the two arrays is multiplied in a manner that mitigates the propagation of wavelength harmonics through the system. In some embodiments, an emitter array comprising a plurality of spectrally selective emitters provides the input MIR radiation to a spectroscopy system. In some embodiments, spectrally selective detectors are used to detect narrow spectral components in the radiation after they have passed through the test sample.

Abstract translation: 公开了包括能够进行精细光谱分辨率和高灵敏度光谱的分级光谱色散的MIR光谱系统。 通过采用位于测试样本两侧的至少两个衍射透镜阵列来导出分层光谱色散，每个衍射透镜阵列接收具有输入光谱范围的输入辐射并将输入辐射分配成多个输出信号，每个输出信号具有 输入辐射的光谱范围。 结果，两个阵列的信号乘法因子以减轻波长谐波通过系统的传播的方式相乘。 在一些实施例中，包括多个光谱选择性发射器的发射器阵列将输入MIR辐射提供给光谱系统。 在一些实施例中，光谱选择性检测器用于在它们通过测试样品之后检测辐射中的窄光谱分量。

公开(公告)号：US10006855B2

公开(公告)日：2018-06-26

申请号：US15359296

申请日：2016-11-22

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Frank T. Hartley

IPC: G01N21/35 ,  G01N21/3577 ,  G01J3/42 ,  G01J3/02 ,  G01J3/18 ,  G01J3/36 ,  G01J3/12

CPC classification number: G01N21/35 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/108 ,  G01J3/18 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/1213 ,  G01N21/3563 ,  G01N21/3577 ,  G01N2021/3148 ,  G01N2201/0245 ,  G01N2201/0638

Abstract: MIR spectroscopy systems comprising hierarchical spectral dispersion that enables fine spectral resolution and high sensitivity spectroscopy are disclosed. Hierarchical spectral dispersion is derived by employing at least two diffractive lens arrays, located on either side of a test sample, each receiving input radiation having an input spectral range and distributing the input radiation into a plurality of output signals, each having a fraction of the spectral range of the input radiation. As a result, the signal multiplication factor of the two arrays is multiplied in a manner that mitigates the propagation of wavelength harmonics through the system. In some embodiments, an emitter array comprising a plurality of spectrally selective emitters provides the input MIR radiation to a spectroscopy system. In some embodiments, spectrally selective detectors are used to detect narrow spectral components in the radiation after they have passed through the test sample.

公开(公告)号：US20160266035A1

公开(公告)日：2016-09-15

申请号：US15065792

申请日：2016-03-09

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Frank T. Hartley

IPC: G01N21/3577 ,  G01J3/28 ,  G01J3/42

CPC classification number: G01N21/35 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/18 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/1213 ,  G01N21/3577

Abstract: MIR spectroscopy systems comprising hierarchical spectral dispersion that enables fine spectral resolution and high sensitivity spectroscopy are disclosed. Hierarchical spectral dispersion is derived by employing at least two diffractive lens arrays, located on either side of a test sample, each receiving input radiation having an input spectral range and distributing the input radiation into a plurality of output signals, each having a fraction of the spectral range of the input radiation. As a result, the signal multiplication factor of the two arrays is multiplied in a manner that mitigates the propagation of wavelength harmonics through the system. In some embodiments, an emitter array comprising a plurality of spectrally selective emitters provides the input MIR radiation to a spectroscopy system. In some embodiments, spectrally selective detectors are used to detect narrow spectral components in the radiation after they have passed through the test sample.

Abstract translation: 公开了包括能够进行精细光谱分辨率和高灵敏度光谱的分级光谱色散的MIR光谱系统。 通过采用位于测试样本两侧的至少两个衍射透镜阵列来导出分层光谱色散，每个衍射透镜阵列接收具有输入光谱范围的输入辐射并将输入辐射分配成多个输出信号，每个输出信号具有 输入辐射的光谱范围。 结果，两个阵列的信号乘法因子以减轻波长谐波通过系统的传播的方式相乘。 在一些实施例中，包括多个光谱选择性发射器的发射器阵列将输入MIR辐射提供给光谱系统。 在一些实施例中，光谱选择性检测器用于在它们通过测试样品之后检测辐射中的窄光谱分量。

公开(公告)号：US11442002B2

公开(公告)日：2022-09-13

申请号：US16901352

申请日：2020-06-15

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Amirhossein Nateghi ,  Taeyoon Jeon ,  Frank T. Hartley

IPC: G01N21/03 ,  G01N1/42 ,  G01N1/44 ,  G01N21/17 ,  G01N21/25 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3577

Abstract: The present disclosure is directed toward optical elements, such as sample cuvettes, lenses, prisms, and the like, whose transmissivity is increased by the addition of a geometric anti-reflection layer disposed on at least one surface of the optical element, where the geometric anti-reflection layer includes a plurality of geometric features that collectively reduce the reflectivity of the interface between the surface and another medium. As a result, more of an optical signal incident on the surface passes through the interface. In some embodiments, every surface through which an optical signal passes includes a geometric anti-reflection layer. Due to the increased transmissivity of the optical element, in some embodiments, the use of low-cost, high-refractive-index materials, such as conventional silicon, is enabled.

公开(公告)号：US20200309676A1

公开(公告)日：2020-10-01

申请号：US16901352

申请日：2020-06-15

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Amirhossein Nateghi ,  Taeyoon Jeon ,  Frank T. Hartley

IPC: G01N21/03 ,  G01N1/42 ,  G01N1/44 ,  G01N21/17 ,  G01N21/25 ,  G01N21/35

Abstract: The present disclosure is directed toward optical elements, such as sample cuvettes, lenses, prisms, and the like, whose transmissivity is increased by the addition of a geometric anti-reflection layer disposed on at least one surface of the optical element, where the geometric anti-reflection layer includes a plurality of geometric features that collectively reduce the reflectivity of the interface between the surface and another medium. As a result, more of an optical signal incident on the surface passes through the interface. In some embodiments, every surface through which an optical signal passes includes a geometric anti-reflection layer. Due to the increased transmissivity of the optical element, in some embodiments, the use of low-cost, high-refractive-index materials, such as conventional silicon, is enabled.

公开(公告)号：US10712258B2

公开(公告)日：2020-07-14

申请号：US16212347

申请日：2018-12-06

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Amirhossein Nateghi ,  Taeyoon Jeon ,  Frank T. Hartley

IPC: G01N1/42 ,  G01N21/03 ,  G01N1/44 ,  G01N21/17 ,  G01N21/25 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3577

Abstract: The present disclosure is directed toward a cuvette for holding a test sample during optical interrogation with a light signal. The transmissivity of the cuvette is increased by a geometric anti-reflection layer disposed on at least one surface of the cuvette, where the geometric anti-reflection layer includes a plurality of geometric features that collectively reduce the reflectivity of the interface between the surface and another medium. As a result, more of the interrogation signal passes through the interface. In some embodiments, every surface through which the interrogation signal passes includes a geometric anti-reflection layer. Due to the increased transmissivity of the cuvette, light detected after passing through it can have an improved signal-to-noise ratio and/or the light signal used to interrogate the sample can have lower intensity. In addition, the reduction of the reflectivity of each surface enables the use of low-cost, high-refractive-index materials, such as conventional silicon.

公开(公告)号：US20190170633A1

公开(公告)日：2019-06-06

申请号：US16212347

申请日：2018-12-06

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Amirhossein Nateghi ,  Taeyoon Jeon ,  Frank T. Hartley

IPC: G01N21/03

CPC classification number: G01N21/0303 ,  G01N1/42 ,  G01N1/44 ,  G01N21/171 ,  G01N21/255 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3577

Abstract: The present disclosure is directed toward a cuvette for holding a test sample during optical interrogation with a light signal. The transmissivity of the cuvette is increased by a geometric anti-reflection layer disposed on at least one surface of the cuvette, where the geometric anti-reflection layer includes a plurality of geometric features that collectively reduce the reflectivity of the interface between the surface and another medium. As a result, more of the interrogation signal passes through the interface. In some embodiments, every surface through which the interrogation signal passes includes a geometric anti-reflection layer. Due to the increased transmissivity of the cuvette, light detected after passing through it can have an improved signal-to-noise ratio and/or the light signal used to interrogate the sample can have lower intensity. In addition, the reduction of the reflectivity of each surface enables the use of low-cost, high-refractive-index materials, such as conventional silicon.

公开(公告)号：US09518917B2

公开(公告)日：2016-12-13

申请号：US15065792

申请日：2016-03-09

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Frank T. Hartley

IPC: G01N21/35 ,  G01J3/42 ,  G01N21/3577 ,  G01J3/28

CPC classification number: G01N21/35 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/18 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/1213 ,  G01N21/3577

Abstract: MIR spectroscopy systems comprising hierarchical spectral dispersion that enables fine spectral resolution and high sensitivity spectroscopy are disclosed. Hierarchical spectral dispersion is derived by employing at least two diffractive lens arrays, located on either side of a test sample, each receiving input radiation having an input spectral range and distributing the input radiation into a plurality of output signals, each having a fraction of the spectral range of the input radiation. As a result, the signal multiplication factor of the two arrays is multiplied in a manner that mitigates the propagation of wavelength harmonics through the system. In some embodiments, an emitter array comprising a plurality of spectrally selective emitters provides the input MIR radiation to a spectroscopy system. In some embodiments, spectrally selective detectors are used to detect narrow spectral components in the radiation after they have passed through the test sample.

Abstract translation: 公开了包括能够进行精细光谱分辨率和高灵敏度光谱的分级光谱色散的MIR光谱系统。 通过采用位于测试样本两侧的至少两个衍射透镜阵列来导出分层光谱色散，每个衍射透镜阵列接收具有输入光谱范围的输入辐射并将输入辐射分配成多个输出信号，每个输出信号具有 输入辐射的光谱范围。 结果，两个阵列的信号乘法因子以减轻波长谐波通过系统的传播的方式相乘。 在一些实施例中，包括多个光谱选择性发射器的发射器阵列将输入MIR辐射提供给光谱系统。 在一些实施例中，光谱选择性检测器用于在它们通过测试样品之后检测辐射中的窄光谱分量。