Analysis of end-pumped Nd:Ti:LiNbO/sub 3/ microchip waveguide Fabry-Perot lasers

A self-consistent analysis of end-pumped Nd:Ti:LiNbO/sub 3/ microchip waveguide lasers based on the fast Fourier transform beam propagation method (FFT-BPM) has been proposed. The algorithm of the model allows one to describe the laser gain and pump absorption in terms of the complex atomic susceptibility for the case of the Nd/sup 3+/ ions. Considering the interference effects between the forward and backward light waves, the population inversion longitudinal and transversal spatial effects can be simulated. The laser characteristics of the Nd:Ti:LiNbO/sub 3/ waveguide laser correlate well with the experimental data and theoretical results. The design rules for the optimized microchip laser are also developed by using the proposed model.