نتایج جستجو برای: laser variable measurement

تعداد نتایج: 857157  

Journal: :Proceedings of the National Academy of Sciences 1979

1996
Gadi Lenz

Optical communication systems require optoelectronic devices and components that operate at a wavelength of 1.5 plm, where standard optical fibers have a minimum transmission loss. Investigating the performance of these devices and understanding the underlying physics requires good sources at this wavelength. In particular, the investigation of their ultrafast nonlinear response, which will ult...

2003
Siddharth Jain

This report provides a informal survey of laser distance measurement. Applications of laser range finding are briefly discussed and various techniques for laser ranging such as active laser triangulation, pulsed time-of-flight (TOF), phase shift, FMCW, and correlation are described.

2012
Juha Kostamovaara Sami Kurtti Jussi-Pekka Jansson

The pulsed time-of-flight (TOF) laser distance measurement method is based on measurement of the transit time of a short laser pulse (typically 3-4 ns) to an optically visible target and back to the receiver. This method is considered to be a potential solution for applications such as the measurement of levels and geometrical shapes in silos and containers, the positioning of tools and vehicle...

Ali Komeili Ali Shakeri-Zadeh Behafarid Ghalandari Elham Zeinizade Habib Ghaznavi Mousa Tabei Neda Attaran S. Kamran Kamrava Shayan Maleki

Introduction: In this study, we explore in detail cell-specific targeting efficacy of nano-photo-thermal therapy (NPTT) method and the resulting responses that are induced by variable laser intensities and exposure times in cancer cells to induce selective apoptosis. We delineate the synthesis of a high-yielding synthetic F-AuNPs by tailoring the surface of gold nanoparticles ...

2017
Tongyu Yang Zhong Wang Zhengang Wu Xing-Qiang Li Lei Wang Changjie Liu

The laser triangulation method is one of the most advanced methods for large inner diameter measurement. Our research group proposed a kind of inner diameter measuring device that is principally composed of three laser displacement sensors known to be fixed in the same plane measurement position. It is necessary to calibrate the direction of the laser beams that are emitted by laser displacemen...

2004
ARI KILPELÄ Viktor Krozer

This thesis describes the development of high bandwidth (~1 GHz) TOF (time-of-flight) laser range finder techniques for industrial measurement applications in the measurement range of zero to a few dozen metres to diffusely reflecting targets. The main goal has been to improve single-shot precision to mm-level in order to shorten the measurement result acquisition time. A TOF laser range finder...

In this research, microstructure and mechanical properties of laser welded joints between 2304 duplex stainless steel and Inconel 718 nickel-based super alloy were investigated. Microstructural evolution in the various areas of welded joints and also the effect of welding parameters on the mechanical properties of dissimilar joints were studied. Response surface methodology based on the central...

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