Broadband multilayer antireflection coating for quantum cascade laser facets
| Autor: | Sven Peters, Mykhaylo P. Semtsiv, W. Ted Masselink, Yohei Matsuoka |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
chemistry.chemical_element Germanium 02 engineering and technology engineering.material 01 natural sciences law.invention 010309 optics chemistry.chemical_compound Optics Coating law 0103 physical sciences Emission spectrum Fourier transform infrared spectroscopy business.industry 021001 nanoscience & nanotechnology Laser Zinc sulfide Atomic and Molecular Physics and Optics Anti-reflective coating chemistry engineering 0210 nano-technology business Quantum cascade laser |
| Zdroj: | Optics Letters |
| ISSN: | 0146-9592 |
| DOI: | 10.1364/ol.43.004723 |
| Popis: | We demonstrate a broadband multilayer anti-reflection (AR) coating applied to a quantum cascade laser (QCL) facet. The bandwidth of the AR coating was optimized for the range of 8.0 to 12.0 μm to cover the entire emission spectrum of a broad-gain QCL. The laser facets are high-reflectance and AR-coated for use in an external cavity QCL. The AR coating is composed of layers of yttrium fluoride, zinc sulfide, and germanium, all deposited using electron-beam evaporation, and the modal reflectance of the laser facet across the wavelength range was reduced to 0.75%. The external cavity laser performance in a Littrow-type configuration is also described. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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