公开(公告)号：US20140333178A1

公开(公告)日：2014-11-13

申请号：US14274849

申请日：2014-05-12

Applicant: Lin Liu ,  Zhiyong Tan

Inventor： Lin Liu ,  Zhiyong Tan

IPC: H01L41/053 ,  H01L41/09

CPC classification number: H01L41/053 ,  B06B1/06 ,  B06B3/00 ,  H01L41/0933

Abstract: Disclosed is piezoelectric vibrator including a piezoelectric vibrator unit. The piezoelectric vibrator has a vibrating portion, a mass attached on the vibrating portion and having an connecting portion attached on the vibrating portion and at least one extending portion extending from the connecting portion and away from the vibrating portion, and a holder having a stopping portion disposed between the extending portion of the mass and the vibrating portion. A distance from the extending portion to the at least one stopping portion is less than the amplitude of the vibration portion for limiting the vibrating portion and avoiding excessive amplitude of the vibrating portion.

Abstract translation: 公开了包括压电振动器单元的压电振动器。 压电振动器具有振动部分，质量附着在振动部分上，并且具有连接在振动部分上的连接部分和从连接部分延伸并远离振动部分的至少一个延伸部分和具有止动部分的保持器 设置在物料的延伸部分和振动部分之间。 从延伸部到至少一个止动部的距离小于用于限制振动部的振动部的振幅，并且避免振动部的过大振幅。

公开(公告)号：US08749225B2

公开(公告)日：2014-06-10

申请号：US13641777

申请日：2011-08-29

Applicant: Zhiyong Tan ,  Juncheng Cao ,  Yingjun Han ,  Zhen Chen

Inventor： Zhiyong Tan ,  Juncheng Cao ,  Yingjun Han ,  Zhen Chen

IPC: G01R13/38

CPC classification number: G01J1/4257 ,  B82Y20/00 ,  H01S3/0014 ,  H01S5/0014 ,  H01S5/3402

Abstract: The present invention provides a power measurement apparatus and method for a pulsed terahertz quantum-cascade laser (THz QCL). The apparatus includes a light source part, a light path part, and a detection part. Terahertz light emitted by a THz QCL reaches a terahertz quantum-well photodetector (THz QWP) through the measurement apparatus, and is absorbed to generate a corresponding current signal. A signal processing circuit extracts a voltage signal from the current signal, amplifies the voltage signal, and inputs the amplified voltage signal to an oscilloscope for reading and displaying. According to a responsivity of the THz QWP at a lasing frequency of the laser, the measurement of the output power of the pulsed THz QCL is acquired. The present invention avoids integration estimation when a thermal detector is used to measure output power of a THz QCL in a pulse operating mode, and can directly acquire the power value of a pulsed output from the laser according to the amplitude of the detector responding to the pulsed terahertz light.

Abstract translation: 本发明提供了一种用于脉冲太赫兹量子级联激光器（THz QCL）的功率测量装置和方法。 该装置包括光源部分，光路部分和检测部分。 由太赫兹QCL发射的太赫兹光通过测量装置到达太赫兹量子阱光电检测器（THz QWP），并被吸收以产生相应的电流信号。 信号处理电路从电流信号中提取电压信号，放大电压信号，并将放大的电压信号输入到示波器进行读取和显示。 根据激光器的激光频率下的THz QWP的响应度，获得脉冲THz QCL的输出功率的测量。 本发明在热探测器用于测量脉冲操作模式中的THz QCL的输出功率时避免了积分估计，并且可以根据检测器的振幅直接从激光器获取脉冲输出的功率值 脉冲太赫兹光。

公开(公告)号：US09356221B2

公开(公告)日：2016-05-31

申请号：US14274849

申请日：2014-05-12

Applicant: Lin Liu ,  Zhiyong Tan

Inventor： Lin Liu ,  Zhiyong Tan

IPC: H01L41/08 ,  H01L41/053 ,  B06B1/06 ,  H01L41/09 ,  B06B3/00

CPC classification number: H01L41/053 ,  B06B1/06 ,  B06B3/00 ,  H01L41/0933

Abstract: Disclosed is piezoelectric vibrator including a piezoelectric vibrator unit. The piezoelectric vibrator has a vibrating portion, a mass attached on the vibrating portion and having an connecting portion attached on the vibrating portion and at least one extending portion extending from the connecting portion and away from the vibrating portion, and a holder having a stopping portion disposed between the extending portion of the mass and the vibrating portion. A distance from the extending portion to the at least one stopping portion is less than the amplitude of the vibration portion for limiting the vibrating portion and avoiding excessive amplitude of the vibrating portion.

Abstract translation: 公开了包括压电振动器单元的压电振动器。 压电振动器具有振动部分，质量附着在振动部分上，并且具有连接在振动部分上的连接部分和从连接部分延伸并远离振动部分的至少一个延伸部分和具有止动部分的保持器 设置在物料的延伸部分和振动部分之间。 从延伸部到至少一个止动部的距离小于用于限制振动部的振动部的振幅，并且避免振动部的过大振幅。

公开(公告)号：US20140103904A1

公开(公告)日：2014-04-17

申请号：US13641777

申请日：2011-08-29

Applicant: Zhiyong Tan ,  Juncheng Cao ,  Yingjun Han ,  Zhen Chen

Inventor： Zhiyong Tan ,  Juncheng Cao ,  Yingjun Han ,  Zhen Chen

IPC: G01J1/42

CPC classification number: G01J1/4257 ,  B82Y20/00 ,  H01S3/0014 ,  H01S5/0014 ,  H01S5/3402

Abstract: The present invention provides a power measurement apparatus and method for a pulsed terahertz quantum-cascade laser (THz QCL). The apparatus includes a light source part, a light path part, and a detection part. Terahertz light emitted by a THz QCL reaches a terahertz quantum-well photodetector (THz QWP) through the measurement apparatus, and is absorbed to generate a corresponding current signal. A signal processing circuit extracts a voltage signal from the current signal, amplifies the voltage signal, and inputs the amplified voltage signal to an oscilloscope for reading and displaying. According to a responsivity of the THz QWP at a lasing frequency of the laser, the measurement of the output power of the pulsed THz QCL is acquired. The present invention avoids integration estimation when a thermal detector is used to measure output power of a THz QCL in a pulse operating mode, and can directly acquire the power value of a pulsed output from the laser according to the amplitude of the detector responding to the pulsed terahertz light.

Abstract translation: 本发明提供了一种用于脉冲太赫兹量子级联激光器（THz QCL）的功率测量装置和方法。 该装置包括光源部分，光路部分和检测部分。 由太赫兹QCL发射的太赫兹光通过测量装置到达太赫兹量子阱光电检测器（THz QWP），并被吸收以产生相应的电流信号。 信号处理电路从电流信号中提取电压信号，放大电压信号，并将放大的电压信号输入到示波器进行读取和显示。 根据激光器的激光频率下的THz QWP的响应度，获得脉冲THz QCL的输出功率的测量。 本发明在热探测器用于测量脉冲操作模式中的THz QCL的输出功率时避免了积分估计，并且可以根据检测器的振幅直接从激光器获取脉冲输出的功率值 脉冲太赫兹光。

公开(公告)号：US20180216994A1

公开(公告)日：2018-08-02

申请号：US15121520

申请日：2014-04-30

Applicant: Zhiyong TAN ,  Juncheng CAO ,  Li GU ,  Yonghao ZHU

Inventor： Zhiyong TAN ,  Juncheng CAO ,  Li GU ,  Yonghao ZHU

IPC: G01J1/42 ,  G01J1/08 ,  G01J3/42

CPC classification number: G01J1/4257 ,  G01J1/08 ,  G01J1/4228 ,  G01J3/42 ,  G01J2001/083

Abstract: A calibration method for an absolute responsivity of a terahertz quantum well detector and a calibration device thereof, in which the device at least comprises: a driving power supply, a single frequency laser source, an optic, a terahertz array detector, a terahertz dynamometer, a current amplifier and an oscilloscope. The calibration method adopts a power detectable single frequency laser source as a calibration photosource, to obtain the absolute responsivity parameters of the detector at the laser frequency; a normalized photocurrent spectrum of the detector is used to further calculate the absolute responsivity parameters of the detector at any detectable frequency. the single frequency laser source with periodically output is adopted as a calibration photosource, the terahertz array detector and the dynamometer are adopted to directly measure and obtain the incident power of the calibrated detector.