title: Development of resonator analysis applied in hybrid slab laser with consideration of optical gain and thermal lens effect.
abstract: By introducing the rate equations and light intensity propagating equations into the fast Fourier transform-based calculation, the optical gain served as the connection between the light field and light intensity, its influence over mode pattern was studied. Thermal lens effect was also investigated by means of finite element analysis. The analysis was applied to a slab laser with a hybrid cavity. A similar experimental study was also carried out in the laboratory. TEM(00) mode with sidelobes along the unstable direction was observed both in the calculation and experiment. As predicted in the analysis, the homogeneity of the pump light improved the beam quality. Numerical and experimental results of pump threshold and slope efficiency were also presented.
authors.affiliation: Center for Photonics and Electronics, Department of Precision Instruments, Tsinghua University, Beijing, China.
authors.forename: Xingkun
authors.initials: X
authors.lastname: Ma
authors.forename: Lei
authors.initials: L
authors.lastname: Huang
authors.forename: Mali
authors.initials: M
authors.lastname: Gong
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
authors.forename: Haitao
authors.initials: H
authors.lastname: Zhang
authors.forename: Ping
authors.initials: P
authors.lastname: Yan