Author Affiliations
Abstract
1 Center for Photonics and Electronics, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
2 Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
In this Letter, a 116-actuator deformable mirror (DM) was used to correct the wavefront distortion in a 10.7 J, 10 Hz neodymium-doped yttrium aluminum garnet (Nd:YAG) slab amplifier. By applying a pump-light homogenizer to transform the 3 × 1 near-field beam array into an integrated beam, the beam quality was greatly improved from 5.54 times diffraction limit (TDL) to 1.57 TDL after being corrected by the DM. To the best of our knowledge, this is the first investigation on beam quality control of an arrayed near-field beam in high-energy diode-pumped solid-state lasers.
140.3280 Laser amplifiers 140.3480 Lasers, diode-pumped 220.1080 Active or adoptive optics 220.1000 Aberration compensation Chinese Optics Letters
2019, 17(5): 051403
1 大连海事大学 航海学院, 辽宁 大连 116026
2 中国船级社, 北京 100007
为了提高现行船舶号灯在复杂光环境中的可识别性,更好地保障船舶夜航安全,运用色度学及半导体激光器的发光原理,设计了一种新型船舶号灯.选取长度大于等于50 m的机动船的右舷灯和桅灯为实验对象,在三维实体建模软件(Lighttools)环境下建立右舷灯和桅灯的实体模型,并对这2种号灯的半导体激光器光谱区波长、光谱权重、功率、光线数量、光线追迹阈值等参数进行设置,模拟了不同接收距离处灯光的颜色属性.模拟结果表明:半导体激光号灯右舷灯颜色刺激纯度为1;半导体激光号灯中桅灯光色的色品坐标与参考白光(色品坐标为(1/3,1/3))接近,二者均符合《国际海上避碰规则》对号灯颜色属性的要求.
半导体激光器 船舶号灯 颜色属性 色度学 semiconductor lasers ship lights Lighttools Lighttools color properties colorimetry
