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Built-focusing lens group

sasikiee

New Member
Apr 18, 2016
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Built-focusing lens group
Principle: Since the optical system uses parallel optical design, the front end of the lens when the distance is changed, no influence on the optical magnification



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Built-focusing lens group


Mvotem is a professional manufacturing company that provides industrial lens[font="'"],zoom lens optical products for industrial, military, scientific research, medical equipment, machinery and equipment, co-workers involved in outsourcing, professional custom precision parts company, a professional manufacturer major markets: China, Italy, the United States, Britain, Japan and South Korea.
A broadband-tunable IR laser has demonstrated the ability to capture the unique spectral fingerprints of gases. The monolithic laser technology is compact, and is expected to have applications in spectroscopy and chemical sensing. [/font]




[font="'"]Picture of the tunable laser system with GPIB transceiver and power supply. The main system measures 127 ×  203 × 184 mm. Courtesy of W. Zhou, et al./Scientific Reports.The laser only has one moving part — a fan for cooling purposes — which Northwestern University professor Manijeh Razeghi cited as a major advantage over existing systems. Most such lasers require mechanical parts to achieve tuning. It operates in the 6.2- to 9.1-μm wavelength range with a single emitting aperture by integrating an 8-laser sampled grating distributed feedback laser array with an on-chip beam combiner, and its gain medium is based on a 5-core heterogeneous quantum cascade laser wafer. [/font]

[font="'"]Razeghi and her team integrated the laser into a system that contains all of the laser driver electronics and tuning software necessary for integration into a spectroscopy system. It produces a stable, single-aperture spot less than 3 mm in diameter that is suitable for standoff detection and is capable of linear or random access scanning with stabilization times of less than 1 ms per wavelength. [/font]


The laser system R&D is the culmination of more than 18 years of quantum cascade laser development work at Northwestern's Center for Quantum Devices, which Photonics Media has covered continuously. The work was supported by the Department of Homeland Security Science and Technology Directorate, National Science Foundation, Naval Air Systems Command, DARPA and NASA.


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Built-focusing lens group -Mvotem

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