搜索结果: 1-15 共查到“激光及激光器技术 Optical”相关记录65条 . 查询时间(0.879 秒)
重庆师范大学物理与电子工程学院张丁可教授课题组在国际权威期刊《Advanced Optical Materials》发表重要成果（图）
对称性波导结构 钙钛矿电泵浦激光器件 激发阈值
2022/9/30
2022年9月21日，重庆师范大学物理与电子工程学院光电功能材料重庆市重点实验室张丁可教授课题组通过设计一种对称性波导结构降低钙钛矿的激发阈值，并提高器件在运行过程中的稳定性，为钙钛矿电泵浦激光器件的实现提供了一定的指导意义。相关成果“Achieving Low Threshold and High Optical Gain Amplified Spontaneous Emission in MA...
COMBINING HIGH SPATIAL RESOLUTION OPTICAL AND LIDAR DATA FOR OBJECT-BASED IMAGE CLASSIFICATION
High Spatial Resolution Lidar Object-Based Classification Aerial Image Image segmentation
2018/4/30
In order to classify high spatial resolution images more accurately, in this research, a hierarchical rule-based object-based classification framework was developed based on a high-resolution image wi...
comparison of dem generation and combination methods using high resolution optical stereo imagery and interferometric sar data
DEM/DTM High resolution Combination Fusion Accuracy Multisensor Optical SAR
2015/9/1
Digital elevation models (DEM) from satellite data are generated mainly from two types of datasets using completely different methods: photogrammetry for optical stereo images (e.g. SPOT5, IKONOS) and...
Fully On-Chip Integrated Photodetector Front-End Dedicated to Real-Time Portable Optical Brain Imaging
Biochip Analog CMOS Integrated Circuit Trans-Impedance Amplifier fNIRS Brain Imaging Medical Imaging Optical Sensors
2012/12/28
Optical brain imaging using functional near infra-red spectroscopy (fNIRS) offers a portable and noninvasive tool for monitoring of blood oxygenation. In this paper we have introduced a new miniaturiz...
New Technology for Grids and Scales Manufacturing in Optical Devices
Laser Controlled Thermocracking Microcrack Grids and Scales Disperse System Luminescent Compounds
2012/9/28
Using the laser controlled thermocracking method, research results for the new technology of optical grids and scales manufacturing are given in this paper. The opportunity of grids and scales manufac...
Preparation and Microstructural, Structural, Optical and Electro-Optical Properties of La Doped Pmn-Pt Transparent Ceramics
Ferroelectric Optics Transmittance Electro-Optical
2012/9/28
Transparent relaxor ferroelectric ceramics of the system lanthanum modified lead magnesium niobate have been investigated for a variety of electro-optic properties could make these materials alternati...
Effect of the Doping Layer Concentration on Optical Absorption in Si δ-Doped GaAs Layer
Doped GaAs Self-Consistently The Intersubband Absorption
2012/9/28
We study in this paper the intersubband optical absorption of Si doped GaAs layer for different applied electric fields and donors concentration. The electronic structure has been calculated by solvin...
A Magnetically Levitated Precise Pointing Mechanism for Application to Optical Communication Terminals
Optical Communications Magnetic Levitation Control Pointing Active Anti-Vibration
2012/6/28
Increasing data bandwidth requirements from spacecraft systems is beginning to pressure existing microwave communications systems. Free-Space optical communications allows for larger bandwidths for lo...
The Design and Experiment Studies of Optical Adapter with Integrated Dust Protection and Shutter Design
High Power Leaser Elastic-Plastic Theory Laser Shutter Optical Adapter
2011/12/5
High power lasers (> +21dBm) have gradually become the common solution for signal transmitting systems including regional cable television, Fiber To The Home (FTTH), and gigabit passive optical networ...
We demonstrated a laser diode position sensor for a near-field height control system. The feedback signal of the laser diode sensor resulted from self-mixing interferometry was characterized and model...
By using an optical nonreturn-to-zero (NRZ) format data-stream to injection-lock an synchronously modulated Fabry-Perot laser diode at below threshold condition (without DC driving current), an output...
High-speed all-optical data-format conversion and logic gate from a synchronously modulated Fabry朠閞ot laser diode (FPLD) below threshold condition is demonstrated by using external injection-induced n...
A multiwavelength fiber ring laser that is based on an S-band erbium-doped fiber amplifier (EDFA) and a semiconductor optical amplifier (SOA) is developed. An optical switch is used to switch the mult...
Hybrid Optical Beam-Former in Receiver Mode
Chirped Fiber Grating Group Delay Ripple Microwave Photonics Optical Phased Array Antennas
2011/9/30
In this paper, an optical beam-former in receiving mode has been proposed and experimentally demonstrated. The requirement in system's hardware has been dramatically reduced using a hybrid approach be...
Ultracompact nonreciprocal optical isolator based on guided resonance in a magneto-optical photonic crystal slab
nonreciprocal optical isolator guided resonance magneto-optical photonic crystal slab
2011/8/10
We design an ultracompact optical isolator with normal incident geometry that operates with a bandwidth that is substantial for a device of this size. For operation in a telecommunication wavelength o...