Distributed-feedback type semiconductor laser

Distributive lasing system

Dither suspension mechanism for a ring laser angular rate sensor

Dither-free actively stabilized laser

Divided electrode type semiconductor laser device

Divided hollow cathode laser

Dopant diffusion barrier layer for use in III-V structures

Doped diamond laser

Doped optical fiber laser amplifier

Doping of germanium and silicon crystals with non-hydrogenic acc

Double active layer semiconductor laser

Double channel planar buried heterostructure laser

Double channel planar buried heterostructure laser with periodic

Double channel semiconductor laser and method of fabricating it

Double conjugate laser amplifier

Double electric discharge coaxial laser

Double etalon optical wavelength reference device

Double helix RF line for CO.sub.2 laser

Double hetero type epitaxial wafer with refractive indices

Double heterojunction semiconductor laser having improved high-f