期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
三角函数二角和与两角差积化和差与和差化积公式的简单记忆法
1
作者 田兆有 《辽东学院学报(自然科学版)》 CAS 1997年第3期47-48,共2页
本文总结出学生难于记忆的三角函数积化和差,和差化积公式的简记方法。
关键词 s:sc cs c:cc SS 一加 二减 余二反 项平
下载PDF
Measurement of the Residual Modal Reflectivity of AR Coating on a SLD
2
作者 MA Dongge SHI Jiawei +2 位作者 LIU Mingda JIN Ensun GAO Dingsan(Jinn University, Changchun 130023, CHN) 《Semiconductor Photonics and Technology》 CAS 1996年第1期6-9,13,共5页
The superluminescent diode has been fabricated by applying an AR coating to the output facet of the semiconductor laser for the purpose of eliminating or suitably reducing the optical feedback. An exact method for mea... The superluminescent diode has been fabricated by applying an AR coating to the output facet of the semiconductor laser for the purpose of eliminating or suitably reducing the optical feedback. An exact method for measuring the modal reflectivity of the antireflection coating to a laser diode is described. It is based on measurements of the spectrum modulation depth of the resulting superluminescent diode output spectrum at arbitrary injection current, and modal reflectivity of less than 3 × 10-4 is obtained. 展开更多
关键词 Antireflection Coatings Optical Films Spectral Analysis OptoelectronicDevices
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部