Multi-wavelength sampled Bragg grating quantum cascade laser arrays
| Autor: | Lijun Wang, Shen Qiang Zhai, Jin Chuan Zhang, Xue Feng Jia, Fengqi Liu, Junqi Liu, Zhanguo Wang, Ning Zhuo, Shu-Man Liu |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Single-mode optical fiber Holography Sampling (statistics) 02 engineering and technology Grating 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Wavelength 020210 optoelectronics & photonics Optics Fiber Bragg grating law 0202 electrical engineering electronic engineering information engineering Photolithography 0210 nano-technology business Quantum cascade laser |
| Zdroj: | Photonics Research. 6:721 |
| ISSN: | 2327-9125 |
| DOI: | 10.1364/prj.6.000721 |
| Popis: | A multi-wavelength sampled Bragg grating (SBG) quantum cascade laser array operating between 7.32 and 7.85 μm is reported. The sampling grating structure, which can be analyzed as a conventional grating multiplied by a sampling function, is fabricated by holographic exposure combined with optical photolithography. The sampling grating period was varied from 8 to 32 μm, and different sampling order (−1st, −2nd, and −3rd order) modes were achieved. We propose that higher-order modes with optimized duty cycles can be used to take full advantage of the gain curve and improve the wavelength coverage of the SBG array, which will be beneficial to many applications. |
| Databáze: | OpenAIRE |
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