To obtain short pulse width and high peak power laser, a 7 kHz sub-nanosecond microchip laser amplified by a grazing incidence double pass slab amplifier is experimentally demonstrated in this Letter. We use a compact side-pumped
Two-dimensional (2D) transition metal dichalcogenides (TMDs) attain increasing attention due to their exceptional nonlinear optical efficiencies, which hold promising potential for on-chip photonics and advanced optoelectronic applications. Planar TMDs ha
C. Beister等人研制了一种斐索劈波长计,为测量连续和脉冲激光器的线宽提供了一种简单方法。以前,扫描法布里-珀罗干涉仪对连续波激光器虽然有效,但很难快速而精确地测量窄带激光脉冲。斐索波长计在空间产生正弦强度图形。光波长可根据光的周期和相位进行计算。线宽是极大值和极小值之间对比度的函数:对比度越大,线宽越窄。
An effective design method of freeform micro lens array is presented for shaping varied laser beams into prescribed rectangular illumination. The variable separation mapping is applied to design concave freeform surfaces for constructing a freeform lens a