Temperature and wavelength dependent properties of multiplate reflectors

This paper describes a new approach to the design of multi-element resonant reflectors. These mirrors provide an effective means of controlling the spectral spread of high-gain laser oscillators, but the complexity of the reflectivity as a function of wavelength
R (\lambda)
has made the design of these systems rather difficult. However, we show that by making a two-dimensional plot of reflectivity versus wavelength and temperature, one can obtain several parameters of the system immediately that an
R (\lambda)
plot does not reveal. Simple algebraic expressions for some of these parameters are given, and a configuration for an improved four-element wavelength selector based on these results is presented.