公开(公告)号：US09329085B2

公开(公告)日：2016-05-03

申请号：US14296051

申请日：2014-06-04

Applicant: Block Engineering, LLC

Inventor： Petros Kotidis ,  Erik Deutsch ,  Ninghui Zhu ,  Dan Cavicchio

IPC: G01J4/00 ,  G01J3/433 ,  B82Y20/00 ,  G01N21/35 ,  H01S5/00 ,  H01S5/14 ,  H01S5/34 ,  G01J3/10 ,  G01J3/45 ,  G02B21/06 ,  G01N21/17 ,  H01S5/40 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/3577

CPC classification number: G01N21/39 ,  B82Y20/00 ,  G01J3/108 ,  G01J3/26 ,  G01J3/4338 ,  G01J3/45 ,  G01N21/272 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/3577 ,  G01N2021/1793 ,  G01N2021/399 ,  G01N2201/0221 ,  G01N2201/0612 ,  G01N2201/068 ,  G01N2201/08 ,  G02B21/0028 ,  G02B21/008 ,  G02B21/06 ,  H01S5/0071 ,  H01S5/141 ,  H01S5/3401 ,  H01S5/3402 ,  H01S5/4012 ,  H01S5/4031

Abstract: A spectroscopy system comprising at least two laser modules, each of the laser modules including a laser cavity, a quantum cascade gain chip for amplifying light within the laser cavity, and a tuning element for controlling a wavelength of light generated by the modules. Combining optics are used to combine the light generated by the at least two laser modules into a single beam and a sample detector detects the single beam returning from a sample.

Abstract translation: 一种包括至少两个激光模块的光谱系统，每个激光模块包括激光腔，用于放大激光腔内的光的量子级联增益芯片，以及用于控制由模块产生的光的波长的调谐元件。 组合光学器件用于将由至少两个激光模块产生的光组合成单个光束，并且样品检测器检测从样品返回的单个光束。

公开(公告)号：US09322775B2

公开(公告)日：2016-04-26

申请号：US14758233

申请日：2012-12-28

Applicant: CNR—CONSIGLIO NAZIONALE DELLE RICERCHE

Inventor： Gianluca Gagliardi ,  Saverio Avino ,  Antonio Giorgini ,  Paolo De Natale

IPC: G01J3/28 ,  G01N21/39 ,  G01J3/02 ,  G01J3/433

CPC classification number: G01N21/39 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/28 ,  G01J3/2803 ,  G01J2003/4332 ,  G01N2021/391 ,  G01N2021/399 ,  G01N2201/06113 ,  G01N2201/08

Abstract: The present invention relates to a method and an apparatus to perform frequency comb spectroscopy. The method includes: —Arranging a waveguide optical cavity (3) having a plurality of cavity mode frequencies with a cavity mode frequency spacing (FSR), said waveguide optical cavity being dispersive so that the frequency spacing of the cavity modes is wavelength dependent; —Arranging a sample (S) with respect to the waveguide optical cavity (3) so that the sample is capable of absorbing light travelling into the waveguide optical cavity; —Coupling pulsed light coming from a light source (1) into the waveguide optical cavity (3), the source light including source comb frequencies (OCF) with a source frequency spacing (RR), the coupled light including an interval of frequencies centered on a main frequency of said comb frequencies due to cavity dispersion; —Locking the waveguide optical cavity to the frequency comb at said main optical frequency; —Detecting transmitted cavity frequencies; —Determining absorption by said sample (S) of said main optical frequency from the detected transmitted frequencies, —Changing the cavity mode frequency (FSR) spacing or the source frequency spacing (RR); —Coupling the pulse light to the waveguide optical cavity (3), the coupled light including an interval of frequencies centered on a second main frequency of said comb frequencies due to cavity dispersion; —Locking the waveguide optical cavity to the frequency comb at said second main optical frequency; —Detecting transmitted cavity frequencies; —Determining absorption by said sample of said second main optical frequency from the detected transmitted frequencies.

Abstract translation: 本发明涉及一种执行频率梳状光谱的方法和装置。 该方法包括： - 布置具有腔模式频率间隔（FSR）的多个腔模式频率的波导光腔（3），所述波导光腔是分散的，使得腔模的频率间隔是波长相关的; - 相对于所述波导光腔（3）布置样品（S），使得所述样品能够吸收行进到所述波导光腔中的光; 将来自光源（1）的脉冲光耦合到波导光腔（3）中，源光包括源频率间隔（RR）的源梳状频率（OCF），耦合光包括以 所述梳状频率由于腔体分散的主频率; 将所述波导光腔锁定在所述主光学频率处的频率梳; 检测发射的腔体频率; - 从所检测的发射频率确定所述主光频的所述样品（S）的吸收， - 使空腔模式频率（FSR）间隔或源频间隔（RR）延长; - 将所述脉冲光耦合到所述波导光腔（3），所述耦合光包括由于空腔分散而以所述梳状频率的第二主频率为中心的频率间隔; 将所述波导光腔锁定在所述第二主光学频率处的频率梳; 检测发射的腔体频率; - 从所检测的发射频率确定所述第二主光学频率的所述样本的吸收。

公开(公告)号：US20160109294A1

公开(公告)日：2016-04-21

申请号：US14515852

申请日：2014-10-16

Applicant: Joseph R. Demers

Inventor： Bryon L. Kasper ,  Joseph R. Demers

IPC: G01J3/433 ,  G01J3/10

CPC classification number: G01J3/4338 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433

Abstract: Highly advantageous spectrometer systems and associated methods are disclosed which utilize phase modulation in conjunction with first and second harmonic detection to reduce or eliminate negative impacts from interference patterns.

Abstract translation: 公开了高效益的光谱仪系统和相关方法，其利用与第一和第二谐波检测结合的相位调制来减少或消除干扰图案的负面影响。

公开(公告)号：US09182284B2

公开(公告)日：2015-11-10

申请号：US13490862

申请日：2012-06-07

Applicant: Cristian Angelo Manzoni ,  Daniele Brida ,  Giulio Nicola Felice Cerullo

Inventor： Cristian Angelo Manzoni ,  Daniele Brida ,  Giulio Nicola Felice Cerullo

IPC: G01J3/45 ,  G01J3/28 ,  G01J3/433 ,  G01J3/453 ,  G01J11/00 ,  H01S3/00

CPC classification number: G01J3/2889 ,  G01J3/433 ,  G01J3/453 ,  G01J11/00 ,  H01S3/005

Abstract: A phase-locked delay device, including: an input port configured to receive an input electromagnetic radiation pulse; said input pulse being to be propagated along a propagation direction and having a first linear polarization different from both a first direction, which is orthogonal to the propagation direction, and a second direction, which is orthogonal to the first direction and the propagation direction; an adjustable Babinet-Soleil module optically coupled to said input port, having a first polarization direction parallel to said first direction. The adjustable Babinet-Soleil module is structured to: provide from the input pulse a first pulse polarized along the first direction and a second pulse collinear to said first pulse and polarized along the second direction, and introduce an adjustable group delay between the first pulse and the second pulse ranging from a minim value ΔTm and a maximum value ΔTM; the maximum value ΔTM being a value greater than 10 fs.

Abstract translation: 一种锁相延迟装置，包括：被配置为接收输入电磁辐射脉冲的输入端口; 所述输入脉冲沿着传播方向传播，并且具有与传播方向正交的第一方向和与第一方向和传播方向正交的第二方向不同的第一线性偏振; 光耦合到所述输入端口的可调节的Babinet-Soleil模块具有平行于所述第一方向的第一偏振方向。 可调节的Babinet-Soleil模块被构造成：从输入脉冲提供沿着第一方向偏振的第一脉冲和与所述第一脉冲共线的第二脉冲并沿着第二方向极化，并且在第一脉冲和 从最小值＆Dgr; Tm和最大值＆Dgr; TM的范围的第二脉冲; 最大值＆Dgr; TM是大于10fs的值。

公开(公告)号：US20150260575A1

公开(公告)日：2015-09-17

申请号：US14494315

申请日：2014-09-23

Applicant: University of Virginia Patent Foundation

Inventor： Brooks Hart Pate ,  Justin L. Neill

IPC: G01J3/443 ,  G01J3/433 ,  G01J3/453

CPC classification number: G01J3/443 ,  G01J3/2889 ,  G01J3/4338 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3586 ,  G01N2021/3595

Abstract: An emission can be obtained from a sample in response to excitation using a specified range of excitation frequencies. Such excitation can include generating a specified chirped waveform and a specified downconversion local oscillator (LO) frequency using a digital-to-analog converter (DAC), upconverting the chirped waveform via mixing the chirped waveform with a specified upconversion LO frequency, frequency multiplying the upconverted chirped waveform to provide a chirped excitation signal for exciting the sample, receiving an emission from sample, the emission elicited at least in part by the chirped excitation signal, and downconverting the received emission via mixing the received emission with a signal based on the specified downconversion LO signal to provide a downconverted emission signal within the bandwidth of an analog-to-digital converter (ADC). The specified chirped waveform can include a first chirped waveform during a first duration, and a second chirped waveform during a second duration.

Abstract translation: 可以使用特定范围的激发频率响应于激发而从样品获得发射。 这种激励可以包括使用数模转换器（DAC）产生指定的啁啾波形和指定的下变频本地振荡器（LO）频率，通过将啁啾波形与指定的上变频LO频率混频来上变频啁啾波形， 上变频啁啾波形以提供用于激发采样的啁啾激励信号，接收来自采样的发射，至少部分地由啁啾激励信号引发发射，并且通过基于指定的信号将接收到的发射与基于 下变频LO信号，以在模数转换器（ADC）的带宽内提供下变频发射信号。 指定的啁啾波形可以包括第一持续时间期间的第一啁啾波形和第二持续时间内的第二啁啾波形。

公开(公告)号：US08970842B2

公开(公告)日：2015-03-03

申请号：US13967675

申请日：2013-08-15

Applicant: Kang Sun ,  Lei Tao ,  David Miller ,  M. Amir Khan ,  Mark A. Zondlo

Inventor： Kang Sun ,  Lei Tao ,  David Miller ,  M. Amir Khan ,  Mark A. Zondlo

IPC: G01N21/00 ,  G01J3/42 ,  G01J3/28 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/27 ,  G01N21/39

CPC classification number: G01J3/42 ,  G01J3/28 ,  G01J3/4338 ,  G01N21/274 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/399

Abstract: A spectroscopic sensor and a spectroscopic method of determining a concentration of a sample are disclosed. The sensor is used in connection with a sample cell containing a sample. The sensor includes a coherent light source configured to transmit an interrogation light beam along an optical sample path directed towards the sample. The sensor also includes an in-line reference cell located in the sample path. The sensor also includes a detector having outputs responsive to absorption signals from the sample and the in-line reference cell. The sensor also includes a processor configured to isolate the reference absorption signals from the in-line reference cell and sample absorption signals from the sample cell and generate calibration information based on the reference absorption signals and determine a concentration of the sample based on the sample absorption signals.

Abstract translation: 公开了一种光谱传感器和确定样品浓度的光谱方法。 传感器与含有样品的样品池结合使用。 传感器包括相干光源，其被配置为沿着指向样品的光学样本路径传输询问光束。 传感器还包括位于样品路径中的一个在线参考单元。 传感器还包括具有响应于来自样品和在线参考单元的吸收信号的输出的检测器。 该传感器还包括处理器，该处理器被配置为将来自在线参考单元的参考吸收信号和来自样品池的样品吸收信号隔离，并基于参考吸收信号产生校准信息，并基于样品吸收确定样品的浓度 信号。

公开(公告)号：US08941828B2

公开(公告)日：2015-01-27

申请号：US13402207

申请日：2012-02-22

Applicant: Hans-Peter Loock ,  Helen Waechter

Inventor： Hans-Peter Loock ,  Helen Waechter

IPC: G01J3/42 ,  G01J3/45 ,  G01J3/427 ,  G01J3/433 ,  G01N21/77

CPC classification number: G01J3/42 ,  G01J3/427 ,  G01J3/433 ,  G01N21/7746 ,  G01N2021/7776 ,  G01N2021/7779 ,  G01N2021/7783

Abstract: Described are methods for multi-wavelength cavity ring-down spectroscopy; comprising simultaneously and continuously irradiating an optical cavity with light at two or more different wavelengths, each light being intensity-modulated at a different modulation frequency, detecting the light of two or more wavelengths after the light has traveled through the optical cavity; measuring an optical loss of each detected light; and determining a characteristic of the optical cavity from the optical loss of each detected light. Also described are apparatus and systems for multi-wavelength cavity ring-down spectroscopy.

Abstract translation: 描述了多波长腔体衰减光谱法的方法; 包括以两个或更多个不同波长的光同时且持续地照射光腔，每个光以不同的调制频率进行强度调制，在光已经穿过光腔之后检测两个或更多个波长的光; 测量每个检测到的光的光学损耗; 以及从每个检测到的光的光损失确定光腔的特性。 还描述了用于多波长腔体衰减光谱的装置和系统。

公开(公告)号：US08922767B2

公开(公告)日：2014-12-30

申请号：US12303526

申请日：2007-06-08

Applicant: Kishan Dholakia ,  Phillip Ronald Thomas Jess ,  Michael Mazilu

Inventor： Kishan Dholakia ,  Phillip Ronald Thomas Jess ,  Michael Mazilu

IPC: G01J3/44 ,  G01N21/65 ,  G01J3/433 ,  G01J3/28 ,  B01L3/00

CPC classification number: G01J3/0297 ,  B01L3/5027 ,  G01J3/28 ,  G01J3/433 ,  G01J3/44 ,  G01J3/4412 ,  G01N21/65 ,  G01N2021/651 ,  G01N2021/656

Abstract: A micro-fluidic system comprising means for optically trapping a particle and a Raman excitation source for causing Raman scatter from the particle while it is in the optical trap.

Abstract translation: 一种微流体系统，包括用于光学捕获颗粒和拉曼激发源的装置，用于在所述光阱中引起来自所述颗粒的拉曼散射。

公开(公告)号：US20140336957A1

公开(公告)日：2014-11-13

申请号：US14367420

申请日：2012-12-19

Applicant: The Board of Trustees of the Leland Stanford Junior University

Inventor： Ronald K. Hanson ,  Jay B. Jeffries ,  Kai Sun ,  Ritobrata Sur ,  Xing Chao

IPC: G01N21/39 ,  G01N33/00 ,  G01J3/433

CPC classification number: G01N21/39 ,  G01J3/433 ,  G01J3/4338 ,  G01N33/0062 ,  G01N2201/12

Abstract: A method of calibration-free scanned-wavelength modulation spectroscopy (WMS) absorption sensing is provided by obtaining absorption lineshape measurements of a gas sample on a sensor using 1/-normalized WMS-2/j where an injection current to an injection current-tunable diode laser (TDL) is modulated at a frequency ̂ where a wavelength modulation and an intensity modulation of the TDL are simultaneously generated, extracting using a numerical lock-in program and a low-pass filter appropriate band-width WMS-

Abstract translation: 通过使用1 /正规化WMS-2 / j获得传感器上的气体样品的吸收线尺寸测量来提供无校准扫描波长调制光谱（WMS）吸收感测的方法，其中注入电流可调 二极管激光器（TDL）在同时产生TDL的波长调制和强度调制的频率下被调制，使用数字锁定程序和低通滤波器适当的带宽WMS-<< /（ n = 1,2，...）信号，其中WMS-<< /信号是f的谐波，根据WMS-<< /信号的比率确定气体样本的物理性质， 使用扫描波长WMS的吸收背景，以及使用至少两个谐波来确定非吸收损耗，其中在碰撞加宽已经混合了过渡线宽的环境中，从非吸收基线测量的需要中去除了测量结果，其中 无需了解过渡线宽的无校准WMS测量功能。

公开(公告)号：US08823802B2

公开(公告)日：2014-09-02

申请号：US12898024

申请日：2010-10-05

Applicant: Michael Myrick ,  Heather Brooke ,  Megan Baranowski ,  Jessica McCutcheon ,  Stephen Morgan

Inventor： Michael Myrick ,  Heather Brooke ,  Megan Baranowski ,  Jessica McCutcheon ,  Stephen Morgan

IPC: H04N5/33 ,  G01J3/433 ,  G01N21/88 ,  G01N21/35

CPC classification number: G01J3/433 ,  G01N21/35 ,  G01N21/3563 ,  G01N21/3577 ,  G01N21/88 ,  H04N5/33

Abstract: A system and method for analyzing a sample is disclosed. At least a portion of the sample is illuminated with modulated light from a light source, such as an infrared light source. Infrared energy from the sample is monitored with an infrared detector as the sample is being illuminated with the modulated light. The AC response of the infrared energy is analyzed to determine at least one of emission data or reflection data about the sample. The emission data or the reflection data can be used to enhance chemical contrast between varying substances on the sample.

Abstract translation: 公开了一种用于分析样品的系统和方法。 样品的至少一部分用来自诸如红外光源的光源的调制光照射。 当样品被调制的光照射时，用红外检测器监测来自样品的红外能量。 分析红外能量的AC响应以确定关于样品的发射数据或反射数据中的至少一个。 发射数据或反射数据可用于增强样品上不同物质之间的化学对比度。