Thermodynamics of laser systems. I
Abstract
It is pointed out that in the equations of the motion for laser action proposed so far the rate of transport of extensive properties between the radiating atoms and the surroundings is linearly related to differences between the actual value of the relevant property and some equilibrium value, depending on the conditions of the environment (heat bath). In the present paper it is demonstrated that the above-mentioned expression for transport of extensive properties is incorrect. An alternative formulation is proposed and its consequences on the mechanism of laser action are discussed. This approach involves an exercise in applied thermodynamics. In view of the fundamental character of the laws of thermodynamics involved in the equations of motion, this exercise clearly belongs to the scope of quantum electronics.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- July 1985
- DOI:
- 10.1109/JQE.1985.1072737
- Bibcode:
- 1985IJQE...21..755D
- Keywords:
-
- Chaos;
- Laser Outputs;
- Line Spectra;
- Polarized Electromagnetic Radiation;
- Statistical Mechanics;
- Thermodynamic Properties;
- Entropy;
- Equations Of Motion;
- Heat Transfer;
- Liouville Equations;
- Polarization (Waves);
- Runge-Kutta Method;
- Lasers and Masers