Difference frequency generation of infrared waves in asymmetric quantum wells.There has been a great deal of interest in recent years in the investigation of signals in the terahertz frequency range of the electromagnetic spectrum. One impediment to this ongoing research is the lack of useful sources...
infrared, infrared frequency - the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared" wave number - the reciprocal of the wavelength of a wave attendance - the frequency with which a person is presen...
Can modern infrared analyzers replace gas chromatography to measure anesthetic vapor concentrations? p pBackground/p pGas chromatography (GC) has often been considered the most accurate method to measure the concentration of inhaled anesthetic vapors. Howe... JF Hendrickx,HJ Lemmens,R Carette,... -...
Difference-frequency mixing is generally used to produce coherent radiation at longer wavelengths than either of the pump wavelengths. It is used most often to produce tunable radiation in the infrared from pump radiation in the visible or near infrared, although it can also be used to generate ...
Mid-infrared frequency comb spanning an octave based on an Er fiber laser and difference-frequency generation. J. Infrared Millim. Terahertz Waves 33, 479–484 (2012). Article Google Scholar Cruz, F. C. et al. Mid-infrared optical frequency combs based on difference frequency generation for ...
(gigahertz) of cycles per second. In a radio wave, thewavelengthis inversely proportional to the frequency. Radio frequencies are not visible to the human eye. As the frequency is increased beyond that of the RF spectrum, electromagnetic energy takes the form of microwaves, infrared radiation (...
We describe tunable 5–12-μm mid-infrared generation in single-crystal silver gallium sulfide (AgGaS2), from nonlinear optical difference-frequency generation. Signal and idler waves obtained from a Nd:YAG laser–pumped LiNbO3 optical parametric oscillator (OPO) were mixed in AgGaS2 crystal to ...
Fig. 1.Schematic of SFG sample geometry in the reflection mode (left, β, β1, and β2 are the output angle of the sum frequency beam and the incident angles of the visible and infrared beams, respectively) and the energy level diagram for an SFG process (right). ...
Journal of Infrared, Millimeter, and Terahertz Waves (2024) Ultra-Wideband Multi-Octave Planar Interconnect for Multi-Band THz Communications Shuya Iwamatsu Muhsin Ali Andreas Stöhr Journal of Infrared, Millimeter, and Terahertz Waves (2023) Spintronic terahertz emission with manipulated polarization...
What type of radiation is emitted by a cellphone?older cell phones emit and receive low level radio frequency waves from 200 MHz to more than 800 MHz. Newer cell phones operate in the 900 MHz to 2.4 GHz or more (approaching the power and frequency of microwaves and infrared waves). ...