Admin What is considered as a tunable laser?
A tunable laser is a laser whose wavelength of operation can be altered in a controlled manner. While all laser gain media allow small shifts in output wavelength, only a few types of lasers allow continuous tuning over a significant wavelength range.
Why is a tunable laser of importance in optical networking?
In addition to the transport applications, tunable lasers will also enable switching and optical add/drop multiplexing applications that will drive a different set of performance requirements largely dependent on output power, tuning time, and tuning range.
What does it mean to tune a laser?
Any of various techniques by which a laser’s output wavelength is adjusted to fall within a specific range of values. …
Why is dye laser called tunable laser?
The most useful feature of dye lasers is their tunability. The tunability means that the lasing wavelength for a dye may be varied over a wide range. Due to this reason, dye lasers are also called tunable lasers. Tuning over 500 angstrom has been obtained.
Which is tunable optical source?
Other Topics. Optometrics Tunable Light Source (TLS) is a convenient and affordable integration of the Mini-Chrom monochromator, and an efficient power stabilized broadband Tungsten Halogen light source with a variable aperture/shutter.
How does a tunable diode laser work?
Different diode lasers are used based on the application and the range over which tuning is to be performed. Typical examples are InGaAsP/InP (tunable over 900 nm to 1.6 μm), InGaAsP/InAsP (tunable over 1.6 μm to 2.2 μm), etc.
What is tunable frequency?
This single filter can be tuned to any of the cellular and Wi-Fi bands between 700 MHz and 6 GHz and the filter bandwidth set to the appropriate channel bandwidth. For a center frequency between 700 MHz and 2 GHz, the 1 dB bandwidth can be set from 5 to 40 MHz.
How does wavelength affect laser power?
The power of a laser beam depends on the energy levels of the electrons in the atoms of the material used to produce it, generally called the “lasing” material. In other words, the shorter the wavelength of the light, the higher will be the energy of the photon.
How does frequency affect laser?
Altering this frequency creates different marking effects. A lower frequency will generate ‘spotted’ engraving while a higher frequency will allow ‘line’ engraving. Frequency is inversely proportional to laser beam power, i.e., if the frequency is too high, the power may not be efficient for the marking process.