Suppression of Optical Feedback in Laser Diodes Using Multilayered Broad-band Ultra-low Reflective Facets-coating
| Authors | Sanjay J. Patel1 , Akshay Jariwala2 , C.J. Panchal3 , Vipul Kheraj2 |
| Affiliations |
1 Department of Physics, Sheth P.T. Mahila College of Arts & Home Science, Vanita Vishram, Surat 395001, India 2 Department of Applied Physics, S.V. National Institute of Technology, Surat 395007, India 3 Applied Physics Department, Faculty of Technology & Engineering, M.S. University of Baroda, Vadodara 390001, India |
| Е-mail | vipulkheraj@gmail.com |
| Issue | Volume 12, Year 2020, Number 2 |
| Dates | Received 15 February 2020; revised manuscript received 15 April 2020; published online 25 April 2020 |
| Citation | Sanjay J. Patel, Akshay Jariwala, C.J. Panchal, et al., J. Nano- Electron. Phys. 12 No 2, 02030 (2020) |
| DOI | https://doi.org/10.21272/jnep.12(2).02030 |
| PACS Number(s) | 42.55.Px, 42.79.Wc |
| Keywords | Thin film (101) , Genetic algorithm (5) , Reflectivity (3) , Facet coating, LabVIEW (3) . |
| Annotation |
The multilayered anti-reflection coating (ARC) has been designed and implemented on the facets of edge-emitting laser diode in order to achieve ultra-low reflectivity over a broad wavelength range for suppression of optical feedback in the laser cavity. The design of the multilayer ARC has been obtained by a self-developed program based on genetic algorithm (GA) to achieve low-reflectivity of the order of 0.1 % over a spectral width of 50 nm around the central lasing wavelength of 818 nm and successfully implemented on the laser-diode facets. The effects of facets coating on the optical power emission and the spectral response of the lasers have been investigated. It is demonstrated that the simple design of multilayered ARC obtained using a self-developed GA can successfully reduce the optical feedback from the cavity and prevent the lasing action from the structure, which can be very useful for the fabrication of superluminescent Light Emitting Diodes (SLEDs). |
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List of References |
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