Volume 64, Issue 5 pp. 962-971
RESEARCH ARTICLE

Numerical simulation and analysis of dual base transistor laser

Ramakrishnan Ranjith

Corresponding Author

Ramakrishnan Ranjith

Department of Electronics and Communication Engineering, Government College of Engineering Bargur, Bargur, India

Correspondence

Ramakrishnan Ranjith, Department of Electronics and Communication Engineering, Government College of Engineering Bargur, Bargur, Tamil Nadu, India.

Email: [email protected]

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Shanmugasundaram Piramasubramanian

Shanmugasundaram Piramasubramanian

Department of Electronics Engineering, Madras Institute of Technology Campus, Anna University Chennai, Chennai, India

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Muthu Ganesh Madhan

Muthu Ganesh Madhan

Department of Electronics Engineering, Madras Institute of Technology Campus, Anna University Chennai, Chennai, India

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First published: 11 February 2022
[Correction added on February 21, 2022, after first online publication: Authors first and last names was updated.]

Abstract

In this work, characteristics of dual base transistor laser are numerically analyzed for the first time. Active base region of the transistor laser is split into two unequal regions composing of shorter and longer sections, which are biased separately. Static characteristics of transistor laser are evaluated using a rate equation model, which reveals switching action in output optical power for a longer section base current of 9.2 mA with unpumped shorter section. Hysteresis behavior in the optical output is observed for the longer section input current till 1.6 mA. Optical bistable characteristics are studied for various values of gain (longer) and absorber (shorter) section currents. Further slope efficiency is evaluated using P-I characteristics, before the onset of bistability, for gain lever features under common emitter (CE) configuration. A maximum gain lever of 4.5 dB is observed with the longer section bias current of 1.3 mA.

CONFLICT OF INTEREST

The authors declare no conflicts of interest.

DATA AVAILABILITY STATEMENT

Research data are not shared.

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