摘要: The Fokker-Planck equation has become a very useful tool for treating noise in quantum optics. In this chapter we investigate laser, which is the most important device This subject together with other applications of optics are already treated number handbooks, books and review articles [12.1 – 13, 1.28, 4.8]. main purpose to demonstrate how some methods Chaps. 2 9 can be applied simple laser model (one mode, adiabatic elimination all variables exception field, threshold region). following two points make it difficult but also interesting statistical properties light.