The Role Of Focusing For A Bistable Fabry-Perot Etalon With A Local Saturable Nonlinearity

The non-linear wave-equation has been solved numerically for a Fabry-Perot etalon, assuming a cylindrical symmetric gaussian input beam, a local mixed dispersive and absorptive saturable nonlinearity and an additional nonsaturable background absorption term. The role of focusing has been systematically investigated for both absorptive and dispersive bistability. Whole-beam switching occurs under tight focusing conditions. But, in the case of defocusing and absorptive bistability, a further reduction of spotsize results in loss of the hysteresis characteristics. Thus, thisposes a restriction on the minimum spotsize and, hence on the minimum input power, for bistable operation.

[1]  M. Belić,et al.  Calculation of transverse effects in optical bistability using fast Fourier transform techniques , 1982 .

[2]  V. Dneprovskii,et al.  Optical bistability in semiconductors , 1985 .

[3]  E. Wright,et al.  BEAM PROPAGATION IN A MEDIUM WITH A DIFFUSIVE KERR-TYPE NONLINEARITY. , 1985 .

[4]  M. Lax,et al.  Effects of interference on gain saturation in laser resonators , 1979 .

[5]  V. M. Dwyer,et al.  The role of diffraction in dispersive optical bistability , 1985 .

[6]  Hyatt M. Gibbs,et al.  Role of Diffractive Coupling and Self-Focusing or Defocusing in the Dynamical Switching of a Bistable Optical Cavity , 1982 .

[7]  I. Galbraith,et al.  Diffusive transverse coupling of bistable elements - Switching waves and crosstalk , 1985, IEEE Journal of Quantum Electronics.

[8]  A. Walker,et al.  Spot size dependence of switching power for an optically bistable InSb element , 1985 .

[9]  H. Gibbs,et al.  Optical cross talk between nearby optical bistable devices on the same étalon. , 1982, Optics letters.

[10]  M. Dagenais,et al.  Picojoule, subnanosecond, all‐optical switching using bound excitons in CdS , 1985 .

[11]  Two-dimensional transverse solitary waves as asymptotic states of the field in a bistable optical resonator , 1985 .

[12]  M. Dagenais,et al.  Linear- and nonlinear-optical properties of free and bound excitons in CdS and applications in bistable devices , 1985 .

[13]  E. Wright,et al.  Diffusion and diffraction in dispersive optical bistability , 1985 .