搜索结果: 1-15 共查到“光电子学与激光技术 high-k”相关记录15条 . 查询时间(0.203 秒)
Cornell researchers have developed nanostructures that enable record-breaking conversion of laser pulses into high-harmonic generation, paving the way for new scientific tools for high-resolution imag...
ROAD REGION DETECTION IN URBAN AREAS COMBINING HIGH-RESOLUTION RGB IMAGE AND LASER SCANNING DATA IN A CLASSIFICATION FRAMEWORK
Artificial Neural Network RGB Aerial Image Normalized Digital Surface Model Laser Pulse Intensity Image
2014/4/24
This paper addresses the problem of road region detection in urban areas using an image classification approach. In order to minimize the spectral superposition of the road (asphalt) class with other ...
Quenching of High-Pressure Phases of Silicon Using Femtosecond Laser-driven Shock Wave
Femtosecond laser Silicon Shock wave
2009/6/1
High-pressure phases which are Β-Sn, Imma and simple hexagonal structures of silicon are quenched using an intense femtosecond laser-driven shock wave. These high-pressure phases have never synthesize...
Cutting Technique for Civil Engineering Using a High-Power Laser
High average power laser Cutting technique Concrete cutting
2009/6/1
The cutting performance of concrete using a laser-based hybrid technique was investigated. Experimental conditions included 7 kW laser power, 10 mm laser beam diameter, and 1.25-50 mm/s scanning speed...
The Progress of the Front-end Source of the SG-II High Power Laser System
Pulse shaping Synchronization Regenerative amplifier
2009/6/1
This article describes the front-end system for the SG-II high power laser facility. The front-end of SG-II is based on amplitude waveguide modulator pulse shaping technology and short pulse laser tri...
Review on the High-Power Pulse Fiber Laser Technology and Their Industrial Microelectronics Applications
Fiber Laser Seed-LD MOPA Q-Switched MOPA
2009/6/1
High-power pulse fiber lasers (HPPFLs) using Yb-doped double-clad fiber for industrial applications are evolved as two types including Seed LD-based Master-Oscillator Power-Amplifier (Seed-LD-MOPA) an...
Generation of Fiber Tunable High-power Picosecond Laser Pulse
Fiber laser Fiber amplifier Picosecond laser
2009/6/1
A fiber tunable high-power picosecond laser system has been for the first time demonstrated. A gain switch semiconductor laser diode was introduced as seed source, and a multi-stage single mode Yb-dop...
InP-Based Waveguide Integrated Photodetectors for High-Speed Optical Communication Systems
photodetector photonic integrated circuit balanced and differential photodetector
2010/7/15
We report on the development of evanescently coupled waveguide integrated photodetectors in single-ended,differential and balanced configurations, using a flexible monolithic integration scheme on InP...
High-Speed Vertical-Cavity Laser Diodes at 1.55 μm
High-Speed Vertical-Cavity Laser Diodes
2010/7/15
Buried tunnel junction vertical-cavity surface-emitting lasers (BTJ-VCSELs) for 1.55 μm wavelength, 3dB-cut-off-frequencies around 8 GHz, modulation bandwidths up to 10 Gbit/s and excellent stationary...
High Power and Low Coherence Fiber-optic Source for Incoherent Photonic Signal Processing
Fiber-optic Source Photonic Signal Processing
2010/7/16
A new structure that can generate fibre-optic sources of optimum linewidth for photonic signal
processor applications is presented. The structure is based on a two-stage double-pass topology. Results...
High Capacity Optical Communication Networks?Approaches forEfficient Utilization of Fiber Bandwidth
Optical Communication Networks Fiber Bandwidth
2010/7/15
The rapidly worldwide growing data and internet traffic in telecommunication networks results
in a sharp increase in the demand for transmission capacity. Thus a much more efficient
utilization of t...
Dispersion Compensation for High Speed Optical FiberTransmission System
dispersion dispersion compensation negative dispersion fiber chirped fiber grating
2010/7/15
The dispersion compensation research includes mainly the following technologies: negative dispersion fiber, chirped fiber grating, prechirped technique, dispersion-supporting transmission, frequency s...
High-Temperature Superconductors and Related Compounds Studied by Mössbauer Spectroscopy
High-Temperature Superconductors Mö ssbauer Spectroscopy
2010/12/15
57Fe, 119Sn, and 151Eu Mössbauer spectroscopy was used to study the chemical structure, phonon mode changes, and low-temperature phase transformation around the Tc as well as suppression of super...
High-Tc Superconducting YBa2Cu3O7-δ Films and YBa2Cu3O7-δ/PrBa2Cu3O7-δ Superlattices Deposited by Laser Ablation
High-Tc Superconducting YBa2Cu3O7-δ Films YBa2Cu3O7-δ/PrBa2Cu3O7-δ Superlattices Laser Ablation
2010/12/16
High Tc superconducting YBa2Cu3O7-d thin films and YBa2Cu37-δ/PrBa2Cu3O7-δ superlattices with various periods and layer thicknesses were deposited by laser ablation on SrTiO3 (100) single crystal subs...
The Effect of High Speed Laser Trimming on Accuracy and Stability of Thick Film Resistors
High Speed Laser Trimming Thick Film Resistors
2010/12/28
Many recommendations have been made on the proper operating conditions for the laser trimming process. In general these recommendations have centered on accuracy, precision or throughput. In some inst...