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.
The main difference is the medium of the laser.
Cold lasers are safer and deal less pain than hot lasers. Cold lasers are usually used for repairing skin damage and treating pain and inflammation. Hot lasers are simply used for burning things.
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 . It's not at the top, you have to scroll down to "Description of the Background of Spin-Flip Raman Lasers" under the second image.Source:https://webfiles.uci.edu/mcbrown/display/shaw.html
white light is the full visible like spectrum. lasers are monochromatic. a single or very narrow frequency or wavelength.
tunable-dye laser
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.
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.
Carroll W Rowland has written: 'Excess noise in tunable diode lasers' -- subject(s): Superheterodyne receivers, Lasers
Beate Stephan Falconer has written: 'Grating-tuned external cavity diode lasers' -- subject(s): Design and construction, Semiconductor lasers, Tunable lasers, Silicon oxide films
Industrial lasers are built to be more rugged and easier to maintain.
John Ivan Vukusic has written: 'Flashlamp pumped frequency tunable dye lasers'
well some lasers can burn and some cannot. and some that cannot are more powerful than others
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.
The main difference is the medium of the laser.
Cold lasers are safer and deal less pain than hot lasers. Cold lasers are usually used for repairing skin damage and treating pain and inflammation. Hot lasers are simply used for burning things.
James Reginald Derek Sahw has written: 'Resonance spectroscopy with high power tunable frequency dye lasers'