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Second and third order dispersion of broadband thin-film antireflection coatings for ultrafast lasers
thin films antireflection coatings dispersion control ultrafast optics
2011/4/25
Ultrashort pulse generation relies on a high quality of the laser cavity dispersion control. Common dielectric thin-film coatings, the broadband antireflection (AR) coatings being included, may introd...
Some expected extraordinary behaviours of nitride vertical-cavity surface-emitting lasers following from special features of nitride materials
modelling nitride VCSELs interactions between physical phenomena
2011/4/25
In spite of dramatic efforts of numerous technological centres in the world, until now room-temperature continuous-wave operation of nitride diode vertical-cavity surface-emitting lasers (VCSEL) has n...
Biaxial Strain Effects on Optical Characteristics of Quantum Well Lasers
Biaxial strain Lattice mismatch Refractive index Tensile strain
2010/12/8
The optical gain and refractive index change of a biaxially stressed quantum well lasers are studied theoretically using the multiband effective mass equation (i.e., k→⋅p→ method), deformation p...
Visible (Red)Vertical-Cavity Surface-Emitting Lasers
Vertical-Cavity Surface-Emitting Lasers
2010/7/15
Red VCSELs are ideal light sources for emerging technologies such as plastic-fiber-based communication and high-density optical storage systems. However, less favourable materials properties make desi...
Integration of High-Power Semiconductor Lasers Using Dry-Etched Mirrors
High-Power Semiconductor Lasers Dry-Etched Mirrors
2010/7/15
Broad-area InGaAs-AlGaAs laser diodes emitting at a wavelength of 980 nm with dry-etched mirror facets are presented. The devices exhibit optical output powers up to 1.5W per facet at room temperature...
A Brief Note on Coherent Feedback in Semiconductor Lasers
Coherent Feedback Semiconductor Lasers
2010/12/15
Some aspects on coherent feedback in a laser diode are investigated. In particular, weak optical feedback is considered in the context of the feedback-induced frequency shift. In addition, the Lang-Ko...