Frequency doubling in ultralow frequency wave signals
نویسندگان
چکیده
منابع مشابه
High-efficiency frequency doubling of continuous-wave laser light.
We report on the observation of high-efficiency frequency doubling of 1550 nm continuous-wave laser light in a nonlinear cavity containing a periodically poled potassium titanyl phosphate crystal (PPKTP). The fundamental field had a power of 1.10 W and was converted into 1.05 W at 775 nm, yielding a total external conversion efficiency of 95±1%. The latter value is based on the measured depleti...
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PURPOSE This study examined the number and nature of spatiotemporal channels in the region where the frequency-doubling (FD) illusion would be expected to occur at eight locations spanning the central 30 degrees of the visual field. METHODS The probability of seeing the FD illusion was examined in 17 subjects. Stimuli were presented at 5 octaves of low spatial frequencies, at each of seven fl...
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Due to nonlinear atomic polarization, crystals can emit a different frequency of light than absorbed. In order to see the second order effects of atomic polarization, which cause a doubling in the frequency of the incident light, the incident light must be an intense and coherent source, like a laser. Potassium Dihydrogen Phosphate (KDP) is a crystal that exhibits these nonlinear polarization p...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 1997
ISSN: 0148-0227
DOI: 10.1029/97ja02534