Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Gain-Switched Short Pulse Generation from 1.55 µM InAs/InP/(113)B Quantum Dot Laser Modelled Using Multi-Population Rate Equations

Version 1 : Received: 28 September 2022 / Approved: 30 September 2022 / Online: 30 September 2022 (08:02:06 CEST)

A peer-reviewed article of this Preprint also exists.

Tunc, H.S.D.; Dogru, N.; Cengiz, E. Gain-Switched Short Pulse Generation from 1.55 µm InAs/InP/(113)B Quantum Dot Laser Modeled Using Multi-Population Rate Equations. Mathematics 2022, 10, 4316. Tunc, H.S.D.; Dogru, N.; Cengiz, E. Gain-Switched Short Pulse Generation from 1.55 µm InAs/InP/(113)B Quantum Dot Laser Modeled Using Multi-Population Rate Equations. Mathematics 2022, 10, 4316.

Abstract

For the first time the gain switching properties of an InAs-InP (113)B quantum dot laser are examined theoretically in detail to generate shorter pulses with the application of a Gaussian pulse beam to the laser excited state. The multi population rate equations considering nonlinear gain are solved by the Runge –Kutta method. The numerical results demonstrated that as the homogeneous and the inhomogeneous broadening increase, the differential gain, the gain compression factor and the threshold current of excited state decrease, while threshold current of ground state increases. It was also observed that the contribution of the excited state to gain-switched output pulses depends on not only the value of the inhomogeneous broadening but also the magnitude of the applied current. Finally it was shown that without an optical beam, output pulse has long pulse width due to ground state emission, whereas with an optical beam, narrow pulses having high peak power owing to the excited state emission are generated even though at low currents.

Keywords

gain-switching; semiconductor laser; quantum-dot; homogeneous-broadening; inhomogeneous-broadening; pulse generation

Subject

Physical Sciences, Optics and Photonics

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.