نتایج جستجو برای: visible wavelengths

تعداد نتایج: 94611  

Journal: :iranian journal of medical physics 0
asghar mesbahi medical physics department, faculty of medicine, tabriz university of medical sciences, tabriz, iran. radiation oncology department, imam hospital, tabriz, iran

introduction the purpose of the current study was to determine optical sensitivity of n-isopropyl acrylamide nipam and polyacrylamide gelatin and tetrakis hydroxymethyl phosphoniun chloride (pagat) polymer gels for different wavelength of visible light spectrum applied in optical computed tomography method. materials and methods nipam and pagat polymer gels with conventional formulations used f...

Journal: :Optics express 2014
Steven Miller Kevin Luke Yoshitomo Okawachi Jaime Cardenas Alexander L Gaeta Michal Lipson

Microresonator-based frequency comb generation at or near visible wavelengths would enable applications in precise optical clocks, frequency metrology, and biomedical imaging. Comb generation in the visible has been limited by strong material dispersion and loss at short wavelengths, and only very narrowband comb generation has reached below 800 nm. We use the second-order optical nonlinearity ...

P. Mildren, R.,

Solid-state Raman lasers are known as important sources at normally difficult to access wavelengths, and our recent studies have shown that they also form the basis of a class of wavelength selectable lasers. This paper summarizes our recent studies in wavelength selectable Raman lasers in the visible (532-650 nm) and ultraviolet (266-321 nm). 

Journal: :Journal of Astronomical Telescopes, Instruments, and Systems 2017

2014
Masatoshi Hori Kazuki Shibuya Mitsunari Sato Yoshino Saito

We investigated the lethal effects of visible light on insects by using light-emitting diodes (LEDs). The toxic effects of ultraviolet (UV) light, particularly shortwave (i.e., UVB and UVC) light, on organisms are well known. However, the effects of irradiation with visible light remain unclear, although shorter wavelengths are known to be more lethal. Irradiation with visible light is not thou...

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