Chinese Academy of Sciences

Zhiyan Zhang

Xuechun Lin

Hao Liang

Haijun Yu

Hongyang Wang

Zhiyong Dong

Quansheng Zeng

Houwang Zhu

Wenhao Ma

Jian Xu

Yibo Wang

Jinyong Dong

Chuncheng Li

Wenhua Sun

Wenxin Fu

Yongmei Ma

Yannan Liu

Wenting Wang

Shusen Zhao

Haijuan Yu

A laser cleaning method and device for improving uniformity of a laser cleaning surface are provided. The laser cleaning method includes: applying a peaked-top sine wave signal to a motor; controlling a galvanometer to swing in a reciprocated manner by the motor; shaping a laser beam emitted by a laser to a linear beam by the reciprocated swing of the galvanometer; and performing laser cleaning using the shaped linear beam.

Laser cleaning method and device for improving uniformity of laser cleaning surface

An acousto-optic Q switch, a resonant cavity, and a pulse laser device for improving laser device power. The acousto-optic Q switch includes: a transparent optical element configured to form a phase grating that diffracts laser; a piezoelectric transducer arranged at one end of the transparent optical element and configured to convert electrical energy into ultrasonic energy to form the phase grating in the transparent optical element; and an absorber arranged at the other end of the transparent optical element to absorb the ultrasonic energy.

Acousto-optic Q switch, resonant cavity and pulse laser device for improving laser device power

A laser cleaning system including a laser source, an energy-transferring optical fiber, a laser cleaning head, a coreless motor, a connection lens barrel, and a mirror.

Laser cleaning system

An ultraviolet laser 3D printing device includes a thermostat, a laser head, a non-contact type temperature monitoring device, a scanning galvanometer, a processing platform, a powder laying device, a material to be processed, a computer control system. The device is configured to perform the following functions: presetting a processing temperature by the control system; during the processing procedure, the temperature rise condition of the processed object is monitored by the non-contact type temperature monitoring device and fed back in real time to the control system; and by recording the rise value of the temperature within a certain period, the system can obtain the absorption capability of the laser and the temperature rise degree of the processed material, so that the laser output power can be calculated according to the preset processing temperature value, and the laser power can be adjusted in real time to precisely control the processing temperature.

Ultraviolet laser 3D printing method for precise temperature control of polymer material and device thereof

Growing community of inventors

Beijing, China

Zhiyan Zhang