DEPENDENCE OF WAVELENGTH CONTROL ON DIELECTRIC STRUCTURE FOR VERTICAL-CAVITY SURFACE-EMITTING LASERS

Calculated data are presented that compare the control of the lasing w avelength for different dielectric vertical-cavity surface-emitting la sers that use a GaAs tuning layer of variable thickness to control the longitudinal cavity resonance. The advantages of high-contrast Bragg reflectors and a half-wave cavity spacer thickness become obvious in a chieving both a wide tuning range and minimizing reflectivity changes. (C) 1997 American Institute of Physics.