East China Normal University

Chongqing Institute of East China Normal University

Roi Optoelectronics Technology Co, Ltd.

Yunnan Huapu Quantum Material Co., Ltd

Chongqing Huapu Information Technology Co., Ltd.

Chongqing Huapu New Energy Co., Ltd.

Nanjing Roi Optoelectronics Technology Co., Ltd.

Yinqi Wang

Heping Zeng

Mengyun Hu

Ming Yan

Kun Huang

Xiaoyue Wang

A mid-infrared upconversion imaging method and a mid-infrared upconversion imaging device are provided, which are used for imaging detection in a mid-infrared wavelength band, and related to a technical field of infrared imaging. The method includes directing pump laser and mid-infrared light into a chirped crystal component located in an optical cavity to obtain visible light; and imaging an object with the visible light.

Mid-infrared upconversion imaging method and device

Provided are a method and a system for measuring a transient time width of an ultrashort pulse in real time. The method includes: performing an interaction of a laser pulse to be measured with a linear chirped pulse in a second-order non-linear medium, to generate a sum-frequency beam, wherein an intensity sag occurs in the chirped pulse after the interaction; performing a time spreading by a time stretching system on the chirped pulse with the intensity sag; detecting the spread chirped pulse with the spread intensity sag by a photoelectric detector, and measuring and recording a time width &#x3c4;' of the spread intensity sag by an oscilloscope; and obtaining the transient time width &#x3c4; of the laser pulse to be measured according to a formula of &#x3c4;=&#x3c4;&#x2032;/M, where M is an amplification coefficient of the time stretching system.

Method and system for measuring transient time width of ultrashort pulse

Growing community of inventors

Chongqing, China

Yinqi Wang