Optical Wave Guidance TRIZ Cases
- Quantum Cascade Laser with Dual Gratings for Room-Temperature Terahertz Output
Dual diffraction gratings enable room-temperature operation by reducing electric current requirements and minimizing light loss in the active layer.
- Optoelectronic Semiconductor Laser Light Blocking Layer
A light blocking layer on the front facet of an optoelectronic semiconductor laser suppresses substrate modes.
- GaN Laser Diode Electrode Contact via Sacrificial Resist
Sacrificial organic masks protect semiconductor layers during wet etching, preventing damage and maintaining low contact resistance in laser diodes.
- Semiconductor Saturable Absorber Modulator for SBS Suppression
An externally modulated system using a saturable absorber modulator operates below the gain peak wavelength to reduce noise and improve linearity.
- Fast Tunable Hybrid Laser with Silicon-Photonic Switch
A tunable laser uses a silicon-photonic switch to select narrow-band reflectors for discrete frequency tuning.
- Semiconductor Laser Light Source with Inclined Reflecting Surface
An inclined reflecting surface directs laser light while a connection member bonds the lid, maintaining reflectivity without film interference.
- 2D Photonic Crystal Laser Asymmetric Refractive Index Pairs
A two-dimensional photonic crystal surface emitting laser uses asymmetric modified refractive index region pairs to enhance interference effects.
- Laser Diode Heat Dissipation via Submount Bonding
Bonding laser diodes to submounts reduces thermal resistance, improving efficiency and lowering driving voltage.
- High Power AlGaAs Laser Diode Facet Degradation
Separating the ridge waveguide into an active main section and a passive end section via a trench prevents carrier injection at the facet, eliminating temperature-induced degradation while maintaining high optical power output.
- Semiconductor Laser Asymmetric Light Guide
An asymmetric light guide structure with a low-refractive-index layer improves power conversion efficiency during high output power operation.
- VCSEL Lateral Feedback Cavity Modulation Speed
A coupled cavity VCSEL uses a lateral feedback optical cavity to bias the vertical emission signal through an oxide aperture.
- N-P Tunnel Junction for Semiconductor Thermal Contact
An n-p tunnel junction within a p-type semiconductor epitaxial structure creates an alloyed contact interface.
- InGaN Layer Design for Nitride Semiconductor Laser
An InGaN layer with specific indium composition reduces piezoelectric fields in nitride semiconductor lasers.