Linewidth Characterization of Integrable Slotted Single-Mode Lasers
| Autor: | Azat Abdullaev, Weihua Guo, Qiaoyin Lu, Marta Nawrocka, James O'Callaghan, John F. Donegan, Frank Bello |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Distributed feedback laser
Materials science business.industry Laser pumping Injection seeder Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Laser linewidth Optics Quantum dot laser Optoelectronics Laser power scaling Electrical and Electronic Engineering business Lasing threshold Tunable laser |
| Zdroj: | IEEE Photonics Technology Letters. 26:2225-2228 |
| ISSN: | 1941-0174 1041-1135 |
| Popis: | A single-mode laser platform has been developed with a simple and high-yield fabrication based on etched slots. We present linewidth measurements on such lasers, which are fabricated without any regrowth steps. The group of slots placed on one side of laser cavity provides sufficient reflectivity for lasing, which allows the laser to be integrated with other devices such as semiconductor optical amplifiers and modulators. The laser with an effective cavity length of 450 $\mu $ m exhibits a threshold current of 31 mA and a side-mode suppression ratio of 48 dB. The laser shows a minimum Lorentzian linewidth of $\sim 720$ kHz at room temperature. The linewidth remains $\sim 1$ MHz within the temperature range of 10 °C–60 °C. |
| Databáze: | OpenAIRE |
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