Chaqmaqchee, FAI and Mazzucato, S and Sun, Y and Balkan, N and Tiras, E and Hugues, M and Hopkinson, M (2012) Electrical characterisation of p-doped distributed Bragg reflectors in electrically pumped GaInNAs VCSOAs for 1.3μm operation. Materials Science and Engineering: B, 177 (10). pp. 739-743. DOI https://doi.org/10.1016/j.mseb.2011.12.035
Chaqmaqchee, FAI and Mazzucato, S and Sun, Y and Balkan, N and Tiras, E and Hugues, M and Hopkinson, M (2012) Electrical characterisation of p-doped distributed Bragg reflectors in electrically pumped GaInNAs VCSOAs for 1.3μm operation. Materials Science and Engineering: B, 177 (10). pp. 739-743. DOI https://doi.org/10.1016/j.mseb.2011.12.035
Chaqmaqchee, FAI and Mazzucato, S and Sun, Y and Balkan, N and Tiras, E and Hugues, M and Hopkinson, M (2012) Electrical characterisation of p-doped distributed Bragg reflectors in electrically pumped GaInNAs VCSOAs for 1.3μm operation. Materials Science and Engineering: B, 177 (10). pp. 739-743. DOI https://doi.org/10.1016/j.mseb.2011.12.035
Abstract
The high resistivity that is encountered in p-type DBRs is an important problem in vertical cavity surface emitting lasers and optical amplifiers (VCSELs and VCSOAs). This is because the formation of potential barriers at the interfaces between layers of high and low refractive index inhibits the carrier flow, thus increasing the DBR series resistance. In this work, the electrical characteristics of two p-type doped DBR structures grown on undoped and p-type doped GaAs substrates have been investigated. The DBRs are designed for VCSOAs operating at 1.3 μm and consist of 14-periods of alternating GaAs and Al 0.9Ga0.1As in the first sample and 14-periods of GaAs and Al0.3Ga0.7As/Al0.9Ga0.1As in the second one. For the longitudinal transport sample, Hall mobility and sheet carrier density were measured in the temperature range from 77 to 300 K. In the vertical transport sample, current-voltage (I-V) measurements across the DBR layers were carried out at different temperatures in the range between 15 and 300 K. We achieved resistivity reduction in our samples by using an interface composition grading technique aimed at improving the VCSOA characteristics. © 2011 Elsevier B.V.
Item Type: | Article |
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Uncontrolled Keywords: | p-Type DBRs; VCSELs; VCSOAs; GaInNAs |
Subjects: | Q Science > QA Mathematics > QA75 Electronic computers. Computer science |
Divisions: | Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 12 Jan 2015 10:28 |
Last Modified: | 05 Dec 2024 12:06 |
URI: | http://repository.essex.ac.uk/id/eprint/9051 |