公开(公告)号：US5171733A

公开(公告)日：1992-12-15

申请号：US625766

申请日：1990-12-04

Applicant: Qing Hu

Inventor： Qing Hu

IPC: G01J5/20

CPC classification number: G01J5/20 ,  G01J2005/208 ,  Y10S505/847 ,  Y10S505/849

Abstract: A device is provided for measuring radiant energy, the device comprising a substrate; a bolometer formed from a high T.sub.c superconducting material disposed on the substrate in an area that is about 1.times.5 .mu.m.sup.2 and about 0.02 .mu.m in depth; and a planar antenna disposed on the substrate and coupled to receive radiation and to impart the received radiation to the bolometer.

Abstract translation: 提供了一种用于测量辐射能的装置，所述装置包括基板; 由位于基板上的高Tc超导材料形成的辐射热计，其面积约为1×5μm，深度为约0.02μm; 以及平面天线，其设置在所述基板上并被耦合以接收辐射并且将所接收的辐射赋予所述测辐射热计。

公开(公告)号：US20110101250A1

公开(公告)日：2011-05-05

申请号：US12818337

申请日：2010-06-18

Applicant: Qing Hu

Inventor： Qing Hu

IPC: G21G4/00 ,  H01S3/10

CPC classification number: H01S3/1003 ,  H01S3/106 ,  H01S5/02252 ,  H01S5/0607 ,  H01S5/0655 ,  H01S5/1032 ,  H01S5/1237 ,  H01S5/14 ,  H01S5/22 ,  H01S5/3402 ,  H01S2301/18 ,  H01S2302/02

Abstract: The present invention provides frequency tunable solid-state radiation-generating devices, such as lasers and amplifiers, whose active medium has a size in at least one transverse dimension (e.g., its width) that is much smaller than the wavelength of radiation generated and/or amplified within the active medium. In such devices, a fraction of radiation travels as an evanescent propagating mode outside the active medium. It has been discovered that in such devices the radiation frequency can be tuned by the interaction of a tuning mechanism with the propagating evanescent mode.

Abstract translation: 本发明提供了频率可调固态辐射产生装置，例如激光器和放大器，其活性介质具有至少一个横向尺寸（例如，其宽度）的尺寸，该尺寸远小于产生的辐射的波长和/ 或在活性培养基内放大。 在这样的装置中，一部分辐射在活性介质外部作为消逝传播模式行进。 已经发现，在这种装置中，辐射频率可以通过调谐机构与传播的消逝模式的相互作用来调节。

公开(公告)号：US07692147B2

公开(公告)日：2010-04-06

申请号：US11385039

申请日：2006-03-20

Applicant: Qing Hu ,  Alan W. Min Lee

Inventor： Qing Hu ,  Alan W. Min Lee

IPC: G01N21/35

CPC classification number: G01N21/3581 ,  G01N21/3151 ,  G01N21/3563

Abstract: The present invention generally provides a terahertz (THz) imaging system that includes a source for generating radiation (e.g., a quantum cascade laser) having one or more frequencies in a range of about 0.1 THz to about 10 THz, and a two-dimensional detector array comprising a plurality of radiation detecting elements that are capable of detecting radiation in that frequency range. An optical system directs radiation from the source to an object to be imaged. The detector array detects at least a portion of the radiation transmitted through the object (or reflected by the object) so as to form a THz image of that object.

Abstract translation: 本发明通常提供一种太赫兹（THz）成像系统，其包括用于产生辐射的源（例如，量子级联激光器），其具有在约0.1THz至约10THz范围内的一个或多个频率，以及二维检测器 阵列包括能够检测该频率范围内的辐射的多个辐射检测元件。 光学系统将来自源的辐射引导到要成像的物体。 检测器阵列检测透过物体（或物体反射）的辐射的至少一部分，以形成该物体的太赫兹图像。

公开(公告)号：US20050058168A1

公开(公告)日：2005-03-17

申请号：US10661831

申请日：2003-09-12

Applicant: Qing Hu ,  Benjamin Williams

Inventor： Qing Hu ,  Benjamin Williams

IPC: H01S5/00 ,  H01S5/22 ,  H01S5/30

CPC classification number: H01S5/30 ,  H01S5/005 ,  H01S5/0655 ,  H01S5/22 ,  H01S5/3086 ,  H01S2301/173 ,  H01S2302/02

Abstract: The present invention provides quantum cascade lasers and amplifier that operate in a frequency range of about 1 Terahertz to about 10 Terahertz. In one aspect, a quantum cascade laser of the invention includes a semiconductor heterostructure that provides a plurality of lasing modules connected in series. Each lasing module includes a plurality of quantum well structure that collectively generate at least an upper lasing state, a lower lasing state, and a relaxation state such that the upper and the lower lasing states are separated by an energy corresponding to an optical frequency in a range of about 1 to about 10 Terahertz. The lower lasing state is selectively depopulated via resonant LO-phonon scattering of electrons into the relaxation state.

Abstract translation: 本发明提供了在约1兆赫兹至约10兆赫兹的频率范围内工作的量子级联激光器和放大器。 在一个方面，本发明的量子级联激光器包括提供串联连接的多个激光模块的半导体异质结构。 每个激光模块包括多个量子阱结构，其共同地产生至少上激光状态，下激光状态和弛豫状态，使得上激光和下激光状态被分开与 范围约1至约10太赫兹。 通过电子的谐振LO-声子散射到弛豫状态，选择性地使较低的激光状态衰减。

公开(公告)号：US20050058166A1

公开(公告)日：2005-03-17

申请号：US10661832

申请日：2003-09-12

Applicant: Qing Hu ,  Benjamin Williams

Inventor： Qing Hu ,  Benjamin Williams

IPC: H01S5/00 ,  H01S5/22 ,  H01S5/30 ,  H01S5/343

CPC classification number: B82Y20/00 ,  H01S5/005 ,  H01S5/0655 ,  H01S5/22 ,  H01S5/30 ,  H01S5/3086 ,  H01S5/34313 ,  H01S5/34353 ,  H01S2301/173 ,  H01S2302/02

Abstract: The present invention provides in one aspect a double-sided metal waveguide that can be utilized in a terahertz laser or amplifier operating in a range of about 1 THz to about 10 THz for mode confinement. For example, the double-sided waveguide can include two metallic layers each of which is disposed on a surface of an active region of a terahertz laser or an amplification region of a terahertz amplifier.

Abstract translation: 本发明在一个方面提供一种双面金属波导，其可用于在约1THz至约10THz的范围内工作的太赫兹激光器或放大器，用于模式限制。 例如，双面波导可以包括两个金属层，每个金属层设置在太赫兹激光器的有源区域或太赫兹放大器的放大区域的表面上。