_ Department of nano laser and electronics
Nano laser electronics and nano lasers (femtosecond) or fluid structure and performance
Researcher and author: Dr. ( Afshin Rashid)
Note: A femtosecond nano laser is called a femtosecond nano laser when the separation interval of laser waves is 5 femtoseconds. Note that each femtosecond (fs) is equal to 10-15 seconds. Some fluid lasers are examples of these lasers.
A femtosecond nanolaser is a device that emits light waves in the form of very narrow parallel beams that have a specific wavelength. Gas nanolasers that use electron impact to produce excited ions, which are active nanolaser devices. The main part of ion nano lasers are plasma tubes. The current flow in the tube can be more than 10 nm. Gas nanolasers all share a pump source, and the gas species are spontaneously excited either directly, by collisions with electrons, or indirectly, by collisions with other gases. Femtosecond nanolasers cover the entire optical spectrum from ultraviolet to infrared. However, the spectrum is not covered continuously. Femtosecond nano laser They emit very narrow spectral lines. The most common gas nano lasers (from UV to far ultraviolet).
Among the different types of femtosecond nano lasers , carbon dioxide nano lasers, having the highest average power among gas lasers, are widely used in various cases due to this wide application of high efficiency. (nanolaser) is a laser that on the scale of nano dimensions, these tiny lasers can be quickly modulated and together with the small footprint, make them ideal candidates for optical computing on a chip . The intense optical fields of such a laser also enable the amplification effect in nonlinear optics or surface-enhanced Raman scattering , and thus pave the way for integrated nanophotonic circuits , generally nanolaser enhancement or Amplification is a process in which the environment transfers part of its energy to the emitted electromagnetic radiation , and as a result, the optical power increases. This is the basic principle of all lasers . Quantitatively, gain is a measure of the ability of a laser medium to increase optical power.
Conclusion :
Femtosecond nanolaser When the separation interval of laser waves is 5 femtoseconds, it is called a femtosecond nanolaser. Note that each femtosecond (fs) is equal to 10-15 seconds. Some fluid lasers are examples of these lasers.
Researcher and author: Dr. ( Afshin Rashid)
Specialized doctorate in nano-microelectronics