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CHANGE DETECTION ON POINTS CLOUD DATA ACQUIRED W ITH A GROUND LASER SCANNER
Ground LiDAR laser scanning points cloud comparison
2015/8/13
Ground based laser scanning is now well settled in the fields of cultural heritage, as-built modelling and monitoring applications. W e
intend to use laser scanning to detect changes on building sit...
Erasable Phase Change Disks with Super Resolution Capability by Pulse-Readout
erasable thermal phase change super resolution disk (EPSR) optical super resolution mask layer recording layer below-diffraction-limited aperture pulse-readout
2011/11/30
Erasable thermal phase change super resolution (EPSR) disks composed of mask and recording layers can be fabricated with a 揵elow-diffraction-limited?aperture within the readout spot to achieve optical...
Effects of ApertureWall on the Readout Signal of Erasable Thermal Phase Change Super Resolution (EPSR) Disks
erasable thermal phase change super resolution disk (EPSR) optical super resolution mask layer recording layer below-diffraction-limited aperture aperture wall pulse readout
2011/11/30
A 揵elow-diffraction-limited?aperture within the readout spot for high-density recording can be achieved on erasable thermal phase change super resolution (EPSR) disks. Compared to the large aperture w...
Initialization characteristics and their effects on the erasability of phase change optical disks using transmission electron microscopy
phase change optical disks initialization mark characteristics erasability transmission electron microscopy
2011/11/30
We investigated the microstructure of phase change optical disks subjected to various initialization conditions using transmission electron microscopy (TEM). The effects of initialization powers on th...
Multi-level recording in erasable phase-change media by light intensity modulation
light intensity modulation multilevel recording optical disk pulse position modulation multil-layer
2011/11/29
Multilevel recording has an advantage of increasing the recording density without extensively altering altering the current optical configuration.Four-level recording schemes in phase-change disks usi...
Mask films for thermally induced superresolution readout in rewritable phase-change optical disks
Gerasable phase change mask films thermally induced superresolution readout cyclability tellurium
2011/11/29
Tellurium was studied as a mask film in a thermally induced superresoulution rewritable optical disk for detecting below-diffraction-limit marks.Mark trains of 0.15 could be retrieved with 9dB in carr...
Comprehensive analyses based on the rigorous vector diffraction theory were used to simulate the polarized readout signals using a solid immersion lens (SIL) in reading phase change (PC) disks. For an...
Oxygen and Nitrogen Co-Doped GeSbTe Thin Films for Phase-Change Optical Recording
GeSbTe recording layer oxygen and nitrogen doping optical constants microstructure crystallization temperatures phase-change optical disks
2011/11/28
Nitrogen and oxygen co-doped GeSbTe films for phase-change optical recording are investigated. It is found that optical properties of amorphous and crystalline state are similar to that of GeSbTe, cry...
Enhancement of Data Transfer Rate of Phase Change Optical Disk by Doping Nitrogen in Ge–In–Sb–Te Recording Layer
Ge–In–Sb–Te recording material data transfer rate recrystallization speed nitrogen doping
2011/11/25
This work investigated the enhancement of the data transfer rate and/or recrystallization speed of Ge–In–Sb–Te recording material by nitrogen doping. The effects of nitrogen content on the dynamic pro...
Enhancing the Overwriting Characteristics of Phase-Change Optical Disks by Doping in Dielectric Layers
overwriting characteristics cycleability phase-change optical disk doping dielectric layer
2011/11/25
In this work, we studied the enhancement of overwriting characteristics of phase-change optical disks by doping in the dielectric layers. The doping elements included chromium (Cr), molybdenum (Mo), n...
The nitrogen doping effect on the properties of Ge–In–Sb–Te phase-change recording media investigated by blue-light laser
Ge– In–Sb–Te phase-change recording media Nitrogen doping Recrystallization speed Microstructure
2011/11/25
This work investigates the thermal, optical and recrystallization properties as well as the microstructure of nitrogen-doped Ge–In–Sb–Te (GIST) phase-change material when irradiated by blue-light lase...
Optical Packet and Circuit Simultaneous Transmission Technologies for Dynamic Lightpath Setup/Release and Packet Traffic Change
Optical Packet Circuit Simultaneous Transmission Technologies Dynamic Lightpath Setup/Release Packet Traffic Change
2011/5/20
For dynamic traffic change on packet/lightpath integration, all-bandwidth amplifiers and high dynamic-range packet receivers are developed. 80-Gbit/s colored optical packets and 8-lightpaths simultane...
Limitations for the Number of Layers of Multi-Layer Rewritable Phase-Change Optical Disks
Multi-layer Phase-change GeSbTe
2009/6/8
We carried out a feasibility study on rewritable phase-change optical disks with more than two recording layers. Dynamic recording-playing evaluations of the test disks and Tx measurements revealed th...
Wide spectra characteristics of gain and carrier-induced refractive index change from measured amplified spontaneous emission spectra
traveling-wave semiconductor optical amplifier wide spectra characteristics
2005/2/26
Based on our derived analytical equation directly relating small signal gain (SSG) with amplified spontaneous emission (ASE) of traveling-wave semiconductor optical amplifier (TWA), SSG spectra in an ...