欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为解决常用经验计算公式参数复杂、产热项考虑不足等问题,采用优化的激光器热模型分析了激光器连续工作时有源区温度的变化并进行了实验验证。通过分析有源区注入载流子产热机制,建立了替代传统的热源计算公式的经验计算公式,考虑了载流子通过激光器内部渐变异质结时的势垒电阻以提高焦耳热计算精度。制作了电极尺寸为10μm、台面尺寸为20μm的半导体激光器件并对器件热特性进行了模拟。由于未考虑热载流子注入效应,利用传统经验公式得出的有源区热功率密度比提出的优化模型偏低,因而理论模拟的器件内部温升也偏低。对激光器出光特性进行测试,推导出不同注入电流下激光器内部有源区的温升。测量与理论分析对比表明,采用经验公式得出的结果比实际测试结果偏低,而优化的热模型解决了该问题,利用该方法得出的有源区温升与测试结果最大偏差仅为0.2K,且温升随注入电流的变化趋势一致。
英文摘要：
In order to solve the problems existed in the calculation of self heating in the active layer of semiconductor lasers,a new model for simulating the self-heating is introduced.The heat source induced by the carrier injection is analyzed.And the method for calculating the conductance of hetero-junction is also investigated to improve the precision of calculated joule heat.Edge emitting laser is fabricated,and the width of P-contact and stripe of fabricated laser are 10 μm and 20 μm,respectively.From the simulation result,the heat source density deduced from the traditional experience model is much lower than that from the optimized thermal model suggested.Thus a lower temperature rising is proposed in the experience model.By testing the shift of the lasing characteristics at different injected currents,the temperature of active layer is gained.Finally,the change of temperature with injected current obtained from simulation and testing is compared.The temperature rising gained from the experience model is lower than that of the experimental one.However,the new optimized model solves this problem.As a result of the optimized model,the maximum deviation between simulated temperature rising and tested one is about 0.2 K when the injected current is above the threshold current.
同期刊论文项目
同项目期刊论文
Anti-reflection resonance in distributed Bragg reflectors-based ultrathin highly absorbing dielectri
Silver nano islands enhanced Raman scattering on large area grating substrates fabricated by two bea
Biomimetic fabrication and characterization of an artificial rice leaf surface with anisotropic wett
Flexible Nanowiring of Metal on Nonplanar Substrates by Femtosecond-Laser-Induced Electroless Platin
Curvature-Driven Reversible In Situ Switching Between Pinned and Roll-Down Superhydrophobic States f
High-Quality Large-Size Organic Crystals Prepared by Improved Physical Vapor Growth Technique and Th
Rapid, Controllable Fabrication of Regular Complex Microarchitectures by Capillary Assembly of Micro
Unraveling Bright Molecule-Like State and Dark Intrinsic State in Green-Fluorescence Graphene Quantu
Light trapping schemes in organic solar cells: A comparison between optical Tamm states and Fabry-Pe
Fabrication of photopolymer hierarchical micronanostructures by coupling electrospinning and photoli
Reflective Optical Fiber Sensors Based on Tilted Fiber Bragg Gratings Fabricated With Femtosecond La
Grating amplitude effect on electroluminescence enhancement of corrugated organic light-emitting dev
A light-driven turbine-like micro-rotor and study on its light-to-mechanical power conversion effici
Two-photon excited highly polarized and directional upconversion emission from slab organic crystals
Simultaneous efficiency enhancement and self-cleaning effect of white organic light-emitting devices
Strain at Native SiO(2)/Si(111) Interface Characterized by Strain-Scanning Second-Harmonic Generatio
Ferrofluids for Fabrication of Remotely Controllable Micro-Nanomachines by Two-Photon Polymerization
One-Step Preparation of Regular Micropearl Arrays for Two-Direction Controllable Anisotropic Wetting
Amplified spontaneous emission in the cyano-substituted oligo(p-phenylenevinylene) organic crystals:
The improved output performance of a broad-area vertical-cavity surface-emitting laser with an optim
Outcoupling of trapped optical modes in organic light-emitting devices with one-step fabricated peri
Emission characteristics of surface second-order metal grating distributed feedback semiconductor la
Direct integration of aspherical microlens on vertical-cavity surface emitting laser emitting surfac
Embellishment of microfluidic devices via femtosecond laser micronanofabrication for chip functional
High-Power Bottom-Emitting Vertical-Cavity Surface-Emitting Lasers under Continuous-Wave, Quasi-Cont
Femtosecond laser direct patterning of sensing materials toward flexible integration of micronanosen
Surface-plasmon enhanced absorption in organic solar cells by employing a periodically corrugated me
Two-beam-laser interference mediated reduction, patterning and nanostructuring of graphene oxide for
On-chip fabrication of silver microflower arrays as a catalytic microreactor for allowing in situ SE
Role of Fe(3)O(4) as a p-Dopant in Improving the Hole Injection and Transport of Organic Light-Emitt
Power and spectra polarization of large-aperture rectangular-shaped vertical-cavity top-emitting las
Two-Photon Pumped Amplified Spontaneous Emission from Cyano-Substituted Oligo(p-phenylenevinylene) C
Thermal focusing effect in solid-state microchip lasers connected directly with vertical-cavity surf
期刊信息
位置：