Intra-cavity absorber photocurrent characteristics of a quantum dot laser emitting on two emission-states: experiment and simulation

Stefan Breuer; Mattia Rossetti; Lukas Drzewietzki; Ivo Montrosset; Mark Hopkinson; Wolfgang Elsässer

doi:10.1117/12.927081

10 May 2012 Intra-cavity absorber photocurrent characteristics of a quantum dot laser emitting on two emission-states: experiment and simulation

Stefan Breuer, Mattia Rossetti, Lukas Drzewietzki, Ivo Montrosset, Mark Hopkinson, Wolfgang Elsässer

Author Affiliations +

Proceedings Volume 8432, Semiconductor Lasers and Laser Dynamics V; 84320H (2012) https://doi.org/10.1117/12.927081
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

In this contribution we investigate both experimentally and by simulations a quantum dot absorber of a two-section quantum dot laser as an intra-cavity photodiode with a focus on the photo-generated absorber current. The escape of the photo-generated ES carrier sweep-out from the absorber can be controlled by variably biasing the absorber either with a variable external resistor in resistor Self-electro-optic-effect device (resistor-SEED) configuration or by applying a reverse bias. This escape is directly observable in the absorber photocurrent. In the resistor-SEED regime where the absorber is operated in so-called photoconductive mode, a steep increase in photocurrent is observed when the ES joins the GS emission and is attributed to increased losses, as reported recently. In contrast, GS emission and a low photocurrent in the resistor-SEED regime corresponds to a large carrier occupation probability corresponding to a reduced escape. In reverse bias operation, sole ES emission is observed together with a shallow increase in photocurrent with increasing reverse bias, in analogy to the p-n photodiode characteristics. By joining both resulting photocurrent regimes, the respective contributions of carrier capture and escape in the absorber to the averaged photocurrent is identified by numerical simulations. The obtained numerical results are in excellent qualitative agreement with the experiment.

Citation Download Citation

Stefan Breuer, Mattia Rossetti, Lukas Drzewietzki, Ivo Montrosset, Mark Hopkinson, and Wolfgang Elsässer "Intra-cavity absorber photocurrent characteristics of a quantum dot laser emitting on two emission-states: experiment and simulation", Proc. SPIE 8432, Semiconductor Lasers and Laser Dynamics V, 84320H (10 May 2012); https://doi.org/10.1117/12.927081

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