_ Department of nano laser and electronics
Electronics and intensity of incoming electromagnetic wave in nano lasers Nano Laser
Researcher and author: Dr. ( Afshin Rashid)
Note: The intensity of the incoming electromagnetic wave decreases as a result of passing through the absorption process between the material. Absorption is caused by the conversion of a part of the light energy into the movement and specific fluctuations of the absorbent material.
The ability of an environment to absorb electromagnetic radiation depends on several factors, including the electronic structure of atoms and molecules, the wavelength of the radiation, the thickness of the absorbent layer, and internal factors such as the temperature and concentration of the absorbent material. An optical photon when moving is defined as a very small length of its path and the unit is 1-mm, which indicates the amount of reduction in radiant energy due to the absorption of rays per unit of length z.
Nanolasers are limited to devices emitting electromagnetic radiation using light amplification by stimulated emission of radiation in wavelengths from 180 nm to 1 mm. The electromagnetic spectrum of nano laser includes energy from gamma rays to electricity. Nano laser radiation for current military and commercial applications includes ultraviolet, visible and infrared spectrum. Ultraviolet radiation for nanolasers consists of wavelengths of 180 to 400 nm. The visible region consists of radiation with wavelengths between 400 and 700 nm. This is the part we call visible light. The infrared region of the spectrum consists of radiation with a wavelength between 700 nm and 1 mm. The nano laser beam absorbed by the skin penetrates only a few layers. In the eye, visible and near-infrared radiation passes through the cornea and is focused and absorbed by the retina. It is the wavelength of light that determines the visible sense of color: violet at 400 nm, red at 700 nm, and other colors of the visible spectrum in between. When radiation is absorbed, the effect on the absorbing biological tissue is photochemical, thermal or mechanical: in the ultraviolet region, the action is mainly photochemical. In the infrared region, this action is in temperature.
Conclusion :
The intensity of the incoming electromagnetic wave decreases as a result of passing through the absorption process between the material. Absorption is caused by the conversion of a part of the light energy into the movement and specific fluctuations of the absorbent material.
Researcher and author: Dr. ( Afshin Rashid)
Specialized doctorate in nano-microelectronics