A high-throughput gradient thermal compression process was adopted to investigate the
effects of thermal deformation parameters on the deformation behavior and microstructure …

To achieve a broad range of gradient strain from the rim to the center of a single specimen,
the size of the high-throughput double-cone (DC) specimen was optimized using finite …

Reliable and accurate calibration for a four-quadrant detector (QD) is a prerequisite for high-
accuracy laser auto-collimation measurements. However, the calibration accuracy is limited …

For the laser tracking and positioning system of a moving target using a four-quadrant
detector, the accuracy of laser spot position detection has a serious impact on the tracking …

Due to the high accuracy and fast response, measurement systems based on four-quadrant
detectors (4QDs) are widely used. There is a non-linear relationship between the output …

Diffractive optical elements are increasingly favoured due to their ability to provide
numerous design freedoms by adjusting the Fresnel regions. The design freedoms make it …

In atmospheric laser communication, a beam is transmitted through an atmospheric channel,
and the photocurrent output from a quadrant detector (QD) used as the tracking sensor …

The distorted spots induced by atmospheric turbulence significantly degrade the spot
position detection accuracy of the quadrant detector (QD). In this paper, we utilize angular …

Through the use of diffractive optical elements (DOEs) in electro-optical systems, significant
design freedoms have been achieved in these systems. Because of these design freedoms …

Improving measurement accuracy over a wide range is very important for the measurement
system based on four-quadrant detector (4QD). However, its measurement performance is …