Angled facet waveguide quantum cascade laser for external cavity system
| Autor: | Yohei Matsuoka, W. Ted Masselink, Mykhaylo P. Semtsiv, Sylvain Mathonnière |
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| Rok vydání: | 2018 |
| Předmět: |
Facet (geometry)
Materials science business.industry Bent molecular geometry Physics::Optics 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Laser 01 natural sciences Waveguide (optics) law.invention 010309 optics Wavelength Optics Cascade law 0103 physical sciences 0210 nano-technology Quantum cascade laser business |
| Zdroj: | Novel In-Plane Semiconductor Lasers XVII. |
| Popis: | We describe the use of an angled facet to achieve low reflectance of one facet of a quantum cascade laser. A bent waveguide allows one facet to be angled with respect to the waveguide and still use the natural cleavage plane of the crystal. The application of such structures is external-cavity wavelength tunable quantum cascade lasers. The reflectance is studied as a function of angle with an angle of 11.2° reducing the reflectance from 28% to 3.5%. When combined with a dielectric anti-reflection coating, better external-cavity laser performance is possible. |
| Databáze: | OpenAIRE |
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