Simulation of a metal nano-strip grating distributed Bragg reflector (DBR) Laser

Lanxin Deng; Qingyi Guo; Jianwei Mu

doi:10.1117/12.2075260

25 September 2014 Simulation of a metal nano-strip grating distributed Bragg reflector (DBR) Laser

Lanxin Deng, Qingyi Guo, Jianwei Mu

Proceedings Volume 9288, Photonics North 2014; 92880H (2014) https://doi.org/10.1117/12.2075260
Event: Photonics North 2014, 2014, Montréal, Canada

Abstract

The edge-emitting distributed Bragg reflector (DBR) laser with a metal nano-strip grating is proposed. It achieves a high reflectivity with a much shorter grating length of 200μm due to the high refractive index contrast of the metal and the semiconductor. Moreover, the modal coupling (κL) of the grating can be tuned in a wide range by simply changing the design parameters of the metal nano-structure. In this work, the metal grating is investigated by the coupled-wave theory (CWT) and the complex mode matching method (CMMM). Results from these two methods are compared and the effects of changing the grating parameters, such as the spacing of the grating and the core region, the thickness of nano-strips and the duty cycle, are discussed regarding the peak reflectivity and the full-width half-maximum (FWHM) of the reflection spectrum. Further simulation of the laser output with the multi-mode rate equation model demonstrates the single-mode operation for a broad range of the metal grating’s design parameters, thus the design freedom is provided. For various applications of the DBR laser, the requirements such as a shorter cavity length, a lower threshold current, or a very high SMSR can be satisfied by properly setting the design parameters.

Citation Download Citation

Lanxin Deng, Qingyi Guo, and Jianwei Mu "Simulation of a metal nano-strip grating distributed Bragg reflector (DBR) Laser", Proc. SPIE 9288, Photonics North 2014, 92880H (25 September 2014); https://doi.org/10.1117/12.2075260

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available