They set the rate of extinction of the light intensity with distance through the medium (the polarizer in this case). They're your absorption coefficents mentioned in the problem statement.senobim said:Thank you very much!
What does these coefficiants means exactly?
I am not certain as I haven't attempted a derivation. But I suspect that it has something to do with splitting the total intensity into two.senobim said:[tex]I = I_{0}\varepsilon^{-2 \alpha' l}[/tex]
why there is 2 before these?
Laser spectroscopy is a scientific technique that uses laser light to study the interaction between matter and electromagnetic radiation. It is used to measure the properties of atoms, molecules, and solids, such as their energy levels, chemical composition, and physical structure.
In laser spectroscopy, a laser beam is directed at a sample, causing the atoms or molecules in the sample to absorb and emit light at specific wavelengths. By analyzing the changes in the wavelength and intensity of the emitted light, scientists can gather information about the sample's properties.
Transmitted intensity refers to the amount of laser light that passes through a sample without being absorbed. It is a key measurement in laser spectroscopy, as it can provide information about the sample's absorption and scattering properties.
To calculate transmitted intensity, the intensity of the laser before it passes through the sample (incident intensity) is compared to the intensity of the laser after it passes through the sample (transmitted intensity). This ratio is known as the transmittance and is typically expressed as a percentage.
Laser spectroscopy has a wide range of applications in various fields, including chemistry, physics, biology, and environmental science. It is used to analyze the composition of materials, study chemical reactions, and investigate the structure of molecules. It is also used in medical diagnostics and in the development of new technologies, such as lasers and optical devices.