搭建了调制光栅Y分支(MGY)可调谐激光器高精准波长调谐系统,实现了粗扫描结合细扫描的高精度波长扫描标定。在此基础上,对MGY激光器输出波长以及内置法布里-珀罗(F-P)标准具的温度漂移特性进行分析,发现MGY激光器输出波长与温度具有良好的线性关系,且其输出波长曲线的斜率不变,截距随温度线性变化。研究了基于外部气体吸收基准的高精准波长校准方法,并进行实验测试。研究结果表明,在-25~+75 ℃温度范围内,波长扫描范围为40 nm时,所搭建系统的调谐线性度优于0.9999,调谐波长精度优于0.18 pm,准确度优于0.12 pm。

Single-mode, long-wavelength vertical-cavity surface-emitting lasers (VCSELs) in the near- to mid-infrared covering the wavelength range from 1.3 to 2.3 \mum are presented. This wide spectral emission range opens applications in gas sensing and optical interconnects. All these lasers are monolithically grown in the InGaAlAs-InP material system utilizing a buried tunnel junction (BTJ) as current aperture. Fabricated with a novel high-speed design with reduced parasitics, bandwidths in excess of 1

本文以Tanabe-Sugano矩阵为基础,通过分析和计算发现,~4Υ_2和~2E零声子线之间的间隔△与参数D_q、B、C和△E_(?)(斯托克斯频移)之间有简单的线性关系.举例说明了此关系式的应用,并对P.T.Kenyon晶场强度判据作了推导,指出了其在应用上的局限性.