公开(公告)号：US20130314767A1

公开(公告)日：2013-11-28

申请号：US13935369

申请日：2013-07-03

Applicant: The Regents of the University of California

Inventor： Ping Piu Kuo ,  Stojan Radic

IPC: G02F1/39

CPC classification number: G02F1/395 ,  G01J3/0245 ,  G01J3/12 ,  G01J3/32 ,  G02B6/02219 ,  G02B6/0281 ,  G02B6/0365 ,  G02F1/3544 ,  G02F2001/392 ,  G02F2201/02 ,  H01S3/06729 ,  H01S3/06791 ,  H01S3/08027 ,  H01S3/0809 ,  H01S3/094096 ,  H01S3/302

Abstract: A high confinement nonlinear optical fiber is provided along with methods of parametric amplification for use thereof The nonlinear optical fiber may include a plurality of concentric layers which are configured to provide different guiding regimes to low-frequency and high-frequency components through transverse geometry and refractive index profiling, thus reducing waveguide dispersion. The resulting optical fiber provides a parametric device with phase-matching in any spectral region of interest, such that a fiber optic parametric amplifier (FOPA) implementing the optical fiber can amplify in any spectral window of interest. A narrow-band FOPA configured to minimize phase mismatching is also provided for use with the optical fiber, and may be implemented as a light source or a monochromator.

Abstract translation: 提供了高约束非线性光纤以及用于其的参数放大方法。非线性光纤可以包括多个同心层，其被配置为通过横向几何形状和折射率向低频和高频分量提供不同的引导方式 折射率分析，从而降低波导色散。 所得到的光纤在感兴趣的任何光谱区域中提供具有相位匹配的参数设备，使得实现光纤的光纤参数放大器（FOPA）可以在感兴趣的任何光谱窗口中放大。 配置为最小化相位失配的窄带FOPA也被提供用于光纤，并且可以被实现为光源或单色器。

公开(公告)号：US08569677B2

公开(公告)日：2013-10-29

申请号：US12843773

申请日：2010-07-26

Applicant: Oliver Gessner ,  Oleg A. Kornilov ,  Russell B. Wilcox

Inventor： Oliver Gessner ,  Oleg A. Kornilov ,  Russell B. Wilcox

IPC: H01J3/14 ,  H01J5/02

CPC classification number: G01J1/4257 ,  G01J1/04 ,  G01J1/0407 ,  G01J1/0414 ,  G01J1/0448 ,  G01J1/429 ,  G01J1/58 ,  G01J3/02 ,  G01J3/021 ,  G01J3/0245 ,  G01J3/2803

Abstract: The invention provides for a device comprising an apparatus comprising (a) a transmission grating capable of diffracting a photon beam into a diffracted photon output, and (b) an image detector capable of detecting the diffracted photon output. The device is useful for measuring the spatial profile and diffraction pattern of a photon beam, such as a vacuum ultraviolet (VUV) beam.

Abstract translation: 本发明提供了一种包括一种装置的装置，该装置包括：（a）能够将光子束衍射成衍射光子输出的透射光栅，以及（b）能够检测衍射光子输出的图像检测器。 该装置可用于测量诸如真空紫外（VUV）光束的光子束的空间分布和衍射图案。

公开(公告)号：US20120212736A1

公开(公告)日：2012-08-23

申请号：US13401199

申请日：2012-02-21

Applicant: PI LING HUANG ,  KUANG-YU HSU ,  CHENG-KAI WANG ,  EDMUND SUN ,  SHENG-LUNG HUANG

Inventor： PI LING HUANG ,  KUANG-YU HSU ,  CHENG-KAI WANG ,  EDMUND SUN ,  SHENG-LUNG HUANG

IPC: G01J3/44 ,  G02B6/00

CPC classification number: G01J3/0218 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/44 ,  H01S3/06716 ,  H01S3/09415 ,  H01S3/1623 ,  H01S3/1625 ,  H01S3/1636 ,  H01S5/32341

Abstract: The invention relates to a crystal fiber, a Raman spectrometer using the same and a inspection method thereof. The crystal fiber comprises a sapphire crystal is doped with two transition metals having different concentrations. An excitation light beam at a specific wavelength can propagate along the crystal fiber to generate a narrow-band light beam and a wide-band light beam to project on a specimen. Raman scattered light is emitted from the specimen. The wavelength of the Raman scattered light falls within the wavelength range of the wide-band light beam so that the wide-band light beam is enhanced at some characteristic wavelengths to facilitate Raman spectroscopy.

Abstract translation: 本发明涉及一种晶体纤维，使用其的拉曼光谱仪及其检查方法。 晶体纤维包括蓝宝石晶体，其掺杂有两种不同浓度的过渡金属。 特定波长的激发光束可以沿着晶体光纤传播，以产生窄带光束和宽带光束投影在样本上。 拉曼散射光从样品中排出。 拉曼散射光的波长落在宽带光束的波长范围内，使得宽带光束在某些特征波长处被增强以促进拉曼光谱。

公开(公告)号：US07519253B2

公开(公告)日：2009-04-14

申请号：US11599950

申请日：2006-11-15

Applicant: Mohammed N. Islam

Inventor： Mohammed N. Islam

IPC: G02B6/00

CPC classification number: G01J3/108 ,  G01B9/02091 ,  G01J3/0218 ,  G01J3/0245 ,  G01J3/42 ,  G01J2003/102 ,  G01J2003/423 ,  G02B6/29349 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2202/32 ,  H01S3/06725 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094069 ,  H01S3/094076 ,  H01S3/1024 ,  H01S3/302 ,  H01S5/0064 ,  H01S5/0085 ,  H01S5/0092 ,  H01S5/1092 ,  H01S5/146 ,  H01S5/4012 ,  H01S2301/085

Abstract: A broadband light source includes one or more laser diodes that are capable of generating a pump signal having a wavelength shorter than 2.5 microns, a pulse width of at least 100 picoseconds and a pump optical spectral width. The light source also includes one or more optical amplifiers that are coupled to the pump signal and are capable of amplifying the pump signal to a peak power of at least 500 W. The light source further includes a first fiber that is coupled to the one or more optical amplifiers. The first fiber including an anomalous group-velocity dispersion regime and a modulational instability mechanism that operates to modulate the pump signal. In one particular embodiment, the pump signal wavelength resides in the anomalous group-velocity dispersion regime of the first fiber and where different intensities in the pump signal can cause relative motion between different parts of the modulated pump signal produced through modulational instability in the first fiber. The light source also including a nonlinear element that is coupled to the first fiber that is capable of broadening the pump optical spectral width to at least 100 nm through a nonlinear effect in the nonlinear element.

Abstract translation: 宽带光源包括能够产生波长短于2.5微米的泵浦信号，至少100皮秒的脉冲宽度和泵浦光谱宽度的一个或多个激光二极管。 光源还包括耦合到泵浦信号并且能够将泵浦信号放大到至少500W的峰值功率的一个或多个光放大器。光源还包括第一光纤，其耦合到一个或 更多的光放大器。 第一光纤包括异常组 - 速度色散方案和用于调制泵浦信号的调制不稳定机制。 在一个具体实施例中，泵浦信号波长驻留在第一光纤的异常群 - 速度色散方案中，并且其中泵浦信号中的不同强度可引起通过第一光纤中的调制不稳定性产生的调制泵浦信号的不同部分之间的相对运动 。 光源还包括耦合到第一光纤的非线性元件，其能够通过非线性元件中的非线性效应将泵浦光谱宽度扩展至至少100nm。

公开(公告)号：US20190242747A1

公开(公告)日：2019-08-08

申请号：US16316241

申请日：2017-07-07

Applicant: Danmarks Tekniske Universitet

Inventor： Christian Pedersen ,  Peter Tidemand-Lichtenberg ,  Jeppe Seidelin Dam ,  Lasse Høgstedt

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/18 ,  G01J3/28

CPC classification number: G01J3/108 ,  G01J3/0208 ,  G01J3/0245 ,  G01J3/18 ,  G01J3/2803 ,  G01J3/2823

Abstract: The invention provides an infrared upconversion spectrometer for determining a mid-IR spectrum of received infrared light with a high resolution. The spectrometer applies upconversion to transform light in the mid-IR to the near-IR range where efficient detectors are available. The up-conversion causes divergence of the light, and in addition, the invention applies an extra dispersive element to record a spectrum.

公开(公告)号：US09885614B2

公开(公告)日：2018-02-06

申请号：US14968237

申请日：2015-12-14

Applicant: BEIHANG UNIVERSITY

Inventor： Zheng Zheng ,  Xin Zhao ,  Lei Liu ,  Jiansheng Liu

IPC: G01J11/00 ,  G01J3/42 ,  G01J3/10 ,  G01J3/447 ,  G01J3/02 ,  G01J3/433 ,  G01J1/10 ,  G02F1/365 ,  H01S3/00 ,  G02F1/35 ,  G02F1/37 ,  H01S3/067 ,  H01S3/11 ,  H01S3/23 ,  H01S3/08

CPC classification number: G01J11/00 ,  G01J1/10 ,  G01J3/0224 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433 ,  G01J3/447 ,  G02F1/353 ,  G02F1/365 ,  G02F1/37 ,  G02F2203/13 ,  H01S3/0092 ,  H01S3/06791 ,  H01S3/0809 ,  H01S3/1106 ,  H01S3/1112 ,  H01S3/2391

Abstract: A method and a system for measuring an optical asynchronous sample signal. The system for measuring an optical asynchronous sampling signal comprises a pulsed optical source capable of emitting two optical pulse sequences with different repetition frequencies, a signal optical path, a reference optical path, and a detection device. Since the optical asynchronous sampling signal can be measured by merely using one pulsed optical source, the complexity and cost of the system are reduced. A multi-frequency optical comb system using the pulsed optical source and a method for implementing the multi-frequency optical comb are further disclosed.

公开(公告)号：US09810578B2

公开(公告)日：2017-11-07

申请号：US15061308

申请日：2016-03-04

Applicant: Brandt Christopher Pein ,  Harold Young Hwang ,  Wendi Chang ,  Keith A. Nelson ,  Vladimir Bulovic ,  Nathaniel C. Brandt

Inventor： Brandt Christopher Pein ,  Harold Young Hwang ,  Wendi Chang ,  Keith A. Nelson ,  Vladimir Bulovic ,  Nathaniel C. Brandt

IPC: G01J1/42 ,  G01J1/58 ,  G01J5/04 ,  G01J3/02 ,  G01J5/08 ,  G01J3/04 ,  G01J3/42

CPC classification number: G01J5/046 ,  G01J1/58 ,  G01J3/0216 ,  G01J3/0245 ,  G01J3/04 ,  G01J3/42 ,  G01J5/0815 ,  G01J5/0837

Abstract: A radiation detection technique employs field enhancing structures and electroluminescent materials to converts incident Terahertz (THz) radiation into visible light and/or infrared light. In this technique, the field-enhancing structures, such as split ring resonators or micro-slits, enhances the electric field of incoming THz light within a local area, where the electroluminescent material is applied. The enhanced electric field then induces the electroluminescent material to emit visible and/or infrared light via electroluminescent process. A detector such as avalanche photodiode can detect and measure the emitted light. This technique allows cost-effective detection of THz radiation at room temperatures.

公开(公告)号：US20170012199A1

公开(公告)日：2017-01-12

申请号：US15203773

申请日：2016-07-06

Applicant: Si-Ware Systems

Inventor： Yasser M. Sabry ,  Diaa Khalil ,  Tarik E. Bourouina ,  Momen Anwar

IPC: H01L49/00

CPC classification number: H01L49/00 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0216 ,  G01J3/0237 ,  G01J3/0245 ,  G01J3/108 ,  G01J3/26 ,  G01J3/42 ,  H01K1/04 ,  H01K1/14

Abstract: An optical radiation source produced from a disordered semiconductor material, such as black silicon, is provided. The optical radiation source includes a semiconductor substrate, a disordered semiconductor structure etched in the semiconductor substrate and a heating element disposed proximal to the disordered semiconductor structure and configured to heat the disordered semiconductor structure to a temperature at which the disordered semiconductor structure emits thermal infrared radiation.

Abstract translation: 提供由诸如黑色硅的无序半导体材料产生的光辐射源。 光辐射源包括半导体衬底，在半导体衬底中蚀刻的无序半导体结构和设置在无序半导体结构附近的加热元件，其被配置为将无序半导体结构加热到无序半导体结构发射热红外辐射的温度 。

公开(公告)号：US09476769B2

公开(公告)日：2016-10-25

申请号：US14861755

申请日：2015-09-22

Applicant: OMNI MEDSCI, INC.

Inventor： Mohammed N. Islam

IPC: G02B6/00 ,  G01J3/42 ,  H01S3/30 ,  G01J3/10 ,  G01B9/02 ,  G01J3/02 ,  H01S5/00 ,  H01S5/10 ,  H01S5/14 ,  G02B6/293 ,  G02F1/35 ,  H01S3/067 ,  H01S3/094 ,  H01S3/102

CPC classification number: G01J3/108 ,  G01B9/02091 ,  G01J3/0218 ,  G01J3/0245 ,  G01J3/42 ,  G01J2003/102 ,  G01J2003/423 ,  G02B6/29349 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2202/32 ,  H01S3/06725 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094069 ,  H01S3/094076 ,  H01S3/1024 ,  H01S3/302 ,  H01S5/0064 ,  H01S5/0085 ,  H01S5/0092 ,  H01S5/1092 ,  H01S5/146 ,  H01S5/4012 ,  H01S2301/085

Abstract: An optical system includes a tunable semiconductor light emitter that generates an input beam having a wavelength shorter than about 2.5 microns, an optical isolator coupled to the emitter and configured to block reflected light into the emitter, an optical amplifier receiving the input beam and outputting an intermediate beam, and optical fibers receiving the intermediate beam and forming an output beam. A subsystem includes lenses or mirrors that deliver the output beam to a sample. The subsystem may include an Optical Coherence Tomography (OCT) apparatus having a sample arm and a reference arm, the output beam having a temporal duration greater than approximately 30 picoseconds, a repetition rate between continuous wave and Megahertz or higher, and a time averaged intensity less than approximately 50 MW/cm2. The system may also include a light detection system collecting any of the output beam that reflects or transmits from the sample.

Abstract translation: 光学系统包括可调谐半导体光发射器，其产生具有短于约2.5微米的波长的输入光束;光隔离器，耦合到发射器并被配置为阻挡入射发射器的反射光;接收输入光束的光放大器， 中间光束和接收中间光束的光纤并形成输出光束。 子系统包括将输出光束传递到样品的透镜或反射镜。 子系统可以包括具有采样臂和参考臂的光学相干断层扫描（OCT）装置，输出光束具有大于约30皮秒的时间持续时间，连续波和兆赫兹或更高之间的重复频率以及时间平均强度 小于约50MW / cm 2。 该系统还可以包括光检测系统，其收集从样品反射或透射的任何输出光束。

公开(公告)号：US20160290783A1

公开(公告)日：2016-10-06

申请号：US15040317

申请日：2016-02-10

Applicant: Traycer Diagnostic Systems, Inc.

Inventor： Don J. Burdette

IPC: G01B9/02

CPC classification number: G01B9/02004 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/0245 ,  G01J3/42 ,  G01J9/04 ,  G01N21/3581 ,  G01N21/39

Abstract: Disclosed is a method for a phase-insensitive single-sampling point (SSP) data collection system. A rotated 90° infrared (IR) THz signal from a step-tunable IR laser is passed though the fast axis of a 90° polarizing rotator. The polarizing rotator and a second IR signal are coupled to free space through an electro-optic phase modulator (EO-PM), where the EO-PM only retards the phase of along the slow-axis. The polarization angle is rotated by 45° to form a beat frequency in each arm. The light is passed through a polarizer aligned with the slow axis of the PM fiber. Lastly, a resultant IR beat signal is fiber coupled back into the system and an erbium doped fiber amplifier (EDFA) in each arm amplifies the IR power prior to pump the THz emitter and detector.

Abstract translation: 公开了一种用于相位不敏感单采样点（SSP）数据采集系统的方法。 来自阶跃可调红外激光器的旋转的90°红外（IR）THz信号通过90°偏振旋转器的快轴。 偏振旋转器和第二IR信号通过电光相位调制器（EO-PM）耦合到自由空间，其中EO-PM仅延迟沿着慢轴的相位。 偏振角旋转45°以在每个臂中形成拍频。 光通过与PM光纤的慢轴对准的偏振片。 最后，得到的IR差拍信号被光纤耦合回系统，并且每个臂中的掺铒光纤放大器（EDFA）在泵送THz发射器和检测器之前放大IR功率。