The spin-flip tunable laser employs the Raman effect to change the emitted frequency of light. They normally operate in the microwave or infrared sections of the electromagnetic spectrum. We (as humans) can only see the visible light section of the electromagnetic spectrum, and both sections the lasers operate in are outside of that range.
This is the simplified answer. If you want a more scientific explanation of how it works, see
Source:https://webfiles.uci.edu/mcbrown/display/shaw.html
All tunable LASERs are LASERS, however not all LASERS are tunable. In a tunable laser the lasing medium, which is typically a gas, dye or crystal, can be altered to produce slightly different frequencies, thus allowing the laser to be 'tuned' or frequency changed where most LASERS produce a very narrow band of radiation frequencies.
Some examples of liquid lasers are dye lasers, which use organic dyes dissolved in a solvent as the gain medium, and liquid crystal lasers, which use liquid crystal materials to create the gain necessary for laser emission. These liquid lasers have tunable emission wavelengths and can be used in various research and industrial applications.
Grating in laser refers to a diffraction grating, which is a device that uses interference to disperse light into its component colors. It is often used in lasers to select specific wavelengths of light or to create tunable laser systems by changing the angle of the grating.
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he was co-inventor the 'spin-flip tunable laser'.
Tunable laser diodes measure the concentration of gases in an area. The advantages of tunable laser diodes is that they are able to detect very low levels of these gases.
After earning his PhD., Dr. Shaw worked 19 years as a Research Scientist for Bell Laboratories in Murray Hill, New Jersey, where he was the co-inventor of the spin-flip Raman tunable laser. He joined Rutgers in 1991 and moved to the Newark campus a new laser technology - the far-infrared free electron - that he developed at Bell Labs. The laser, which is to be operational in 1999, generates short tunable far-infrared light pulses that will permit the analog or pulsed magnetic resonance techniques for the first time in the optical wavelength regime.
Markettechinc is an online source for tunable lasers. Another reputable company is Santec. This company also has an online presence where the tunable lasers are sold.
Tunable lasers are commonly used for recording transmission data, or absorption information. In some applications, cooling is required, and tunable lasers are good for that use as well.
UV lasers are good for analyizing top surface layers. It has a penetration depth of only a few nanometers, making it incredibly sensitive, even to very thin layers.
All tunable LASERs are LASERS, however not all LASERS are tunable. In a tunable laser the lasing medium, which is typically a gas, dye or crystal, can be altered to produce slightly different frequencies, thus allowing the laser to be 'tuned' or frequency changed where most LASERS produce a very narrow band of radiation frequencies.
No; spin yes, flip no.
Some examples of liquid lasers are dye lasers, which use organic dyes dissolved in a solvent as the gain medium, and liquid crystal lasers, which use liquid crystal materials to create the gain necessary for laser emission. These liquid lasers have tunable emission wavelengths and can be used in various research and industrial applications.
Tunable lasers can be tuned in various manners. Some of these include single line and multi line tuning. Narrow band tuning is also used to tune various lasers as well.
Laurie Chappell has written: 'Development of a tunable laser based bragg grating demodulation system'
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