scispace - formally typeset
Search or ask a question

What is the facet temperature of a semiconductor laser? 


Best insight from top research papers

半导体激光器的刻面温度是影响其可靠性和运行性能的关键因素。已经提出了几种方法来减少刻面加热并最大限度地降低灾难性光学镜损坏(COMD)的风险。一种方法是使用电气隔离和泵浦窗口,与激光腔温度相比,这种窗户可以显著降低刻面温度 。另一种方法是单独泵浦窗口 (SPW) 技术,即刻面部分与激光部分进行电气隔离。该技术已被证明可以将刻面温度降低42%,并保持激光器的斜率效率 。钝化涂层(例如ZnSe)也被用来降低刻面温度和提高半导体激光器的COMD阈值 。COMD 的主要原因是光学吸收引起的半导体激光面氧化

Answers from top 5 papers

More filters
Papers (5)Insight
半导体激光器的刻面温度可以使用基于注入电流和光功率的热源的理论模型来描述。
使用ZnSe钝化涂层可以降低半导体激光器的刻面温度,该涂层可有效抑制氧化并提高灾难性光学镜损伤(COMD)阈值。
当驱动到更高的输出功率时,半导体激光器的刻面温度会升高,从而导致灾难性的光学损坏。
使用电动泵浦窗户可以显著降低半导体激光器的刻面温度。
通过实现单独泵浦窗口 (SPW) 区域,可以降低半导体激光器的刻面温度,从而使温度降低 42%。

Related Questions

What is gas temperature in RF ICP?5 answersThe gas temperature in RF Inductively Coupled Plasma (ICP) systems varies based on different parameters. In the study by J. Krištof et al., the gas temperature in the ICP mode was found to be around 3100 K, while in the Capacitively Coupled Plasma (CCP) mode, it was constant at 450 ± 50 K. Additionally, Lizhu Tong's researchon low-pressure Ar/N2 plasmas operating at 13.56 MHz and 20 mTorr showed a gas temperature of 300 K with an input power of 300 W. These variations highlight the influence of power levels, gas mixtures, and operating modes on the gas temperature within RF ICP systems.
What is the land surface temperature?5 answersLand Surface Temperature (LST) is a critical parameter that influences urban thermal environments, meteorology, hydrology, and climate change studies globally. It is defined as the average temperature of the Earth's surface, impacted by factors like albedo, vegetation cover, and soil moisture. LST plays a vital role in various land surface processes, affecting energy, water, and carbon fluxes, as well as hydrological quantities like soil moisture content and vegetation water stress. Monitoring LST using satellite data allows for better understanding of its spatiotemporal variability, which can be influenced by factors such as land cover, surface thermal properties, topography, and meteorological conditions. Additionally, LST is crucial for assessing surface energy, water balance, and greenhouse effects at both local and global scales.
What is land surface temperature?4 answersLand surface temperature (LST) is a key parameter in the physics of land surface processes on a regional and global scale. It combines the results of all surface-atmospheric interactions and energy exchanges. LST is fundamental in understanding the inherent physical processes of energy and water exchange between the Earth's surface and atmosphere. It plays a crucial role in agriculture as it affects crop growth phases and yields. Accurate measurement of LST is challenging due to discrepancies between retrieved LST and ground truth data. The surface emissivity, which is dynamic due to changing land cover and plant development, needs to be accurately derived for precise LST measurement. Various algorithms and methods have been developed to estimate LST using satellite imagery and other data sources.
How does temperature affect the performance of semiconductor solar cells?4 answersTemperature has a significant impact on the performance of semiconductor solar cells. As the temperature increases, the photovoltaic parameters such as short-circuit current density, open-circuit voltage, fill factor, and power conversion efficiency generally decrease for most types of solar cells. The temperature effect on solar cell performance is attributed to the temperature-dependent band-gap energy, charge carrier mobility, and lifetime. The charge carrier mobility has a significant influence on electron concentration, hole concentration, and Joule heat generation, while the charge carrier lifetime affects recombination heat generation. The efficiency of solar cells under concentrated illumination increases with concentration, but at a certain point, the negative effects of temperature rise suppress the positive effects of light concentration, leading to a decrease in efficiency. Overall, understanding the temperature effects on carrier generation, transport, and recombination is crucial for optimizing the photovoltaic utilization of solar energy.
Is there any experimental work measuring peak electron temperature during ultrafast laser ablation process?4 answersYes, there is experimental work measuring peak electron temperature during ultrafast laser ablation process. The electron temperature of plasma generated by different laser harmonics was measured in the analysis of copper using laser-induced breakdown spectroscopy (LIBS). The study on the ablation of nickel-based superalloy by double-pulse femtosecond laser also investigated the ablation mechanisms and found that more energy deposition can happen from the electron system to the lattice system for double-pulse ablation. Additionally, the ablation threshold of gold film on different substrates irradiated by single pulse ultrafast laser was studied, and the dynamic description of laser absorption and temperature evolution of electron and lattice were achieved based on a two-temperature model. The laser-induced ablation threshold fluence in air of aluminum and tungsten excited by single near-infrared laser pulses was determined, and the evolution of the transient thermodynamic and optical characteristics of the solids following laser excitation was described using a simulation approach based on the two-temperature model.
What are the different combustion temperatures of titanium?5 answersThe combustion temperatures of titanium vary depending on the specific conditions and alloys being studied. In one study, the ignition temperature of a titanium alloy was found to be around 1680 °C. Another study found that titanium dioxide coated with polycarbonate released exothermic energy in the temperature range of 200-400 °C. Combustion temperatures of single titanium particles were measured to be less than the boiling temperatures of titanium or its oxides, with an explosion occurring around the eutectic precipitation temperature of Ti2O3. In the synthesis of titanium aluminide compounds, peak combustion temperatures were measured at 1500 °C for TiAl and 1450 °C for Ti3Al. Combustion of nanocomposite powders with a titanium and boron composition showed an increase in combustion temperature from about 2180 to 2370 °C with increasing methane concentration.