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FEL – free electron laser; FREAG – frequency-resolved electro-absorption gating [citation needed] FROG – frequency-resolved optical gating; FROG-CRAB – frequency-resolved optical gating for complete reconstruction of attosecond bursts [citation needed] FWM – four-wave mixing; FP – Fabry–Perot laser
4.1-9.5 connector, standardized as DIN 47231 (in 1974) and IEC 60169-11 (in 1977) 4.3-10 connector, formerly known as DIN 4.3/10, now standardized as IEC 61169-54; Belling-Lee connector, also called IEC 61169-2 connector, used throughout Europe and Australia, as well as parts of South-East Asia, for domestic television and FM radio antenna cabling
Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the type of laser material (see the figure description for details).
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in ...
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word laser originated as an acronym for light amplification by stimulated emission of radiation.
A distributed-feedback laser (DFB) is a type of single-frequency laser diode. [11] DFBs are the most common transmitter type in DWDM systems. To stabilize the lasing wavelength, a diffraction grating is etched close to the p–n junction of the diode. This grating acts like an optical filter, causing a single wavelength to be fed back to the ...
Far-infrared laser or terahertz laser (FIR laser, THz laser) is a laser with output wavelength in between 30 and 1000 μm (frequency 0.3-10 THz), in the far infrared or terahertz frequency band of the electromagnetic spectrum. FIR lasers have application in terahertz spectroscopy, terahertz imaging as well in fusion plasma physics diagnostics.
An acousto-optic modulator (AOM), also called a Bragg cell or an acousto-optic deflector (AOD), uses the acousto-optic effect to diffract and shift the frequency of light using sound waves (usually at radio-frequency). They are used in lasers for Q-switching, telecommunications for signal modulation, and in spectroscopy for frequency