光子学报
2023, 52(10): 1052403
Author Affiliations
Abstract
1 Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
2 Center of Materials Science and Opto-Electronic Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3 Beijing Academy of Quantum Information Sciences, Beijing 100193, China
We demonstrate GaSb-based interband cascade lasers (ICLs) emitting around 3.65 µm, which exhibit a room-temperature continuous-wave (CW) output power above 100 mW. Cavity-length analysis showed that the laser structure has a low internal loss of while maintaining a total internal quantum efficiency greater than one. After 6400 h CW operation at 25°C, the threshold current of the laser increased by 3%, and the output power decreased by 7%, indicating good reliability of the device.
interband cascade lasers quantum well mid-infrared semiconductor lasers Chinese Optics Letters
2022, 20(2): 022501
1 Laboratory of Solid-State Optoelectronics Information Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing00083, China
2 School of Electrical and Computer Engineering，University of Oklahoma，Norman 73019，USA
3 Center of Materials Science and Optoelectronics Engineering，University of the Chinese Academy of Sciences，Beijing 100049，China
4 Homer L. Dodge Department of Physics and Astronomy，University of Oklahoma，Norman 73019，USA
通过对两种结构参数与设计偏差较大的带间级联激光器（ICL）的研究，探讨了器件性能在结构变化下的耐受性。在300 K时，即使和4.6 μm的设计波长相比蓝移700 nm以上，激光器仍然性能良好，其阈值电流密度低至320 A/cm2。此研究为带间级联激光器在结构变化方面的耐受性提供了坚实的实验依据。
III-V族半导体 带间级联激光器 中红外 量子阱 II类异质结 III-V semiconductors interband cascade lasers mid-infrared quantum wells type-II heterostructures
上海交通大学 机械与动力工程学院, 上海 200240
基于丙丁烷在3.37μm处的基频吸收峰, 使用相应中心波长的连续带间级联激光器和长光程吸收池, 研制了基于波长调制技术的丙丁烷气体检测系统。为自动确定波长调制过程中的锯齿波中心值参数, 基于电流与输出光频率的线性关系, 通过均匀增加激光器驱动电流获得直接吸收光谱。使用基于洛伦兹线型的拟合算法确定吸收峰值对应电流, 使锯齿波输出光以其为中心覆盖吸收峰。实验证明, 以拟合结果31.94mA为中心值的锯齿波, 在叠加频率为20000Hz、幅值为0.03V的高频正弦调制波后, 系统二次谐波峰值超过100mV。算法全过程不依赖标气和F-P标准具等精密光学器件, 可适应实际生产条件下的系统自动定参。
带间级联激光器 可调谐半导体激光吸收光谱 气雾剂检漏 中红外吸收峰 洛伦兹光谱线型 interband cascade lasers tunable diode laser absorption spectroscopy aerosol leak detection system mid-infrared absorption peak Lorentz profile
1 中国科学院上海技术物理研究所 红外成像材料与器件重点实验室，上海 200083
2 中国科学院大学，北京 100049
3 上海科技大学 物质科学与技术学院，上海 201210
制备并测试了II型中红外带间级联激光器，制备的器件在脉冲和连续工作模式下最高工作温度分别为275 K和226 K.80 K下器件激射波长为3.8 μm左右，阈值电流密度约17 A/cm2.对器件在连续工作模式下的自加热效应进行了分析，并利用有限元方法模拟了器件连续工作时的温度分布图.分析和模拟结果均表明自加热效应是限制器件连续工作温度的重要因素.提高散热性能将是进一步提升器件工作温度的有效手段.
带间级联激光器 中红外 分子束外延 interband cascade lasers mid-infrared rang molecular beam epitaxy(MBE) 红外与毫米波学报
2019, 38(4): 04408
Author Affiliations
Abstract
1 State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
2 College of Materials Science and Opto-Electronics Technology, University of Chinese Academy of Sciences, Beijing 101407, China
With the progress of the laser manufacturing technology, trace gas sensors based on tunable interband cascade lasers (ICLs) and quantum cascade lasers (QCLs) have been widely used to detect organic compounds with high sensitivity. Compared with overtone and combination bands in the near infrared region, for many species, the intensities of fundamental rotational-vibrational absorption bands in the mid-infrared region are much stronger. In this paper, we demonstrate an ethanol sensor using a room-temperature continuous-wave (CW) tunable ICL laser as a light source to detect ethanol vapor concentration with high sensitivity. Combined with the first harmonic (1f) normalized second harmonic (2f) wavelength modulation spectroscopy (WMS) technology, the characteristics of the harmonics of the system are analyzed, and the amplitude of the first harmonic decrease with an increased concentration of ethanol has been demonstrated both theoretically and experimentally. As a result, a detection limitation of 28 ppb is achieved.
Ethanol sensor interband cascade lasers wavelength modulation spectroscopy Photonic Sensors
2018, 8(4): 04303
吉林大学电子科学与工程学院, 集成光电子学国家重点联合实验室,吉林 长春 130012
第二型带间级联激光器是一种有效的全固化中红外光源,具有广泛的应用前景。介绍了中红外带间级联激光器的结构,工作原理,最新研究进展,并对影响其工作性能的因素进行了讨论。
激光器 中红外 量子阱 带间级联激光器
