高功率980nm垂直腔面发射激光器的温度特性  

Temperature characteristics of 980 nm high power vertical cavity surface emitting lasers

作　　者：何国荣[1] 沈文娟 王青[3] 郑婉华[3] 陈良惠[3] 

机构地区：[1]深圳信息职业技术学院电子通信技术系,广东深圳518029 [2]深圳市奥兰若有限公司,广东深圳518000 [3]中国科学院半导体研究所纳米光电子实验室,北京100083

出　　处：《红外与激光工程》2010年第1期57-60,共4页Infrared and Laser Engineering

基　　金：国家自然科学基金资助项目(60837001);信息学院青年自然科学基金项目(QN-08011)

摘　　要：应变补偿量子阱结构因带宽大、增益高和波长漂移速度低等特点而成为近年来研究的热点。首次介绍了国内980nm高功率InGaAs/GaAsP应变补偿量子阱结构的垂直腔面发射激光器(VCSEL)的变温实验,测得脉冲条件下600μm直径的器件在10～100℃温度范围内发射波长漂移速度为0.05nm/K,阈值电流随温度变化呈现先缓慢下降后迅速上升的特性。结合VCSEL反射谱、PL谱和增益峰值波长漂移速度,对器件阈值电流特性进行了合理的分析和解释。连续工作状态下,测试得到器件峰值功率为1W,根据波长与耗散功率的实验曲线及热阻计算公式,可估算出垂直腔面发射激光器热阻值为10K/W。Strain compensated quantum well structure has become a hot research topic in recent years because of its interesting characteristics including wide bandwidth,high gain and low wavelength shifting rate.In this article,the variable-temperature experiments of 980 nm high power vertical cavity surface emitting lasers（VCSEL） with InGaAs/GaAsP strain compensated quantum well structure were introduced for the first time.The shifting rate of the lasing wavelength under pulse operation in the temperature range of 10-100 ℃ was measured to be 0.05 nm/K for vertical cavity surface emitting lasers with a diameter of 600 μm.The threshold current changed with the temperature accordingly;it slowly decreased first,then it fast increased with the rising temperature.Combining the reflection spectrum of VCSEL,photoluminescence spectrum and the wavelength shifting velocity of the gain spectrum,temperature characteristics of the threshold current had been reasonably analyzed and explained.Maximum power of the vertical cavity surface emitting lasers was measured to be 1 W under the continuous-wave operation.According to the experimental data of the wavelength and dissipation power and thermal resistance formula,thermal resistance of the device was calculated to be 10 K/W.

关 键 词：垂直腔面发射激光器 高功率 应变补偿 

分 类 号：TN248.4[电子电信—物理电子学]