Comparison of Gain Measurement Techniques for Characterization of Quantum Dot Lasers

Abstract

This paper presents a comparative analysis of three gain measurement methods which are H&P (Hakki & Paoli), SC (Segmented-Contact) and IA (Integrated-Amplifier) for the gain characterization of 1300nm (O-band) InAs/GaAs QD (Quantum Dot) laser devices. In this case, during continuous mode operation at a fixed heat-sink temperature of 17oC, the experimental conditions, measured spectral ranges and signal to noise ratio are compared and advantages are discussed. The devices used for the analysis are fabricated as multi-section, single mode structures. Before self-heating, each of the methods show identical results but SC proved to be better in terms of accuracy of internal loss measurement. The H&P method has been shown the only choice for high current density gain measurements at a fixed junction temperature under consideration. The method to remove self-heating effects via H&P is also discussed and via this method a high current density gain analysis upto 5.5kA/cm2(~ 8e-h pairs)is performed under 30oC fixed junction temperature condition. In comparison to other methods, the IA method has shown to be advantageous in terms of low current density measurements exhibiting the capability of accessing wider spectral ranges and performing the gain characterization where laser material operates in loss.

Authors and Affiliations

Hifsa Shahid

Keywords

Related Articles

Appraisal of Biogas Potential of Biogas from Animal Dung in Saeedabad, Pakistan

Pakistan is facing energy scarcity. The biogas is one of the renewable substitutes. It does not only overcome the energy scarcity but also harness the energy from animal dung which causes the CO2 emissions. The present s...

Modeling and Correlating Rut Depth Observed in Different Asphalt Mixture Performance Tests

The purpose of research is to model and correlate the laboratory rutting behavior of indigenous asphalt mixtures, prior to placing in the field. Extensive laboratory testing was carried out on thirty representative weari...

E-Governance Service System Readiness Assessment Framework from CSCW’s Perspective

Growing E-Participation services compel democratic governments to re-examine their E-Governance service system readiness assessment models with respect to their usability, effectiveness and participatory governance. In p...

Factors Contributing to the Waste Generation in Building Projects of Pakistan

Generation of construction waste is a worldwide issue that concerns not only governments but also the building actors involved in construction industry. For developing countries like Pakistan, rising levels of waste gene...

Multi-Agent Communication System with Chatbots

It has been found that communication is actually important in our lives; without it is difficult to accomplish something. It becomes possible with the support of the technology that is being used today; now it is easy to...

Download PDF file
  • EP ID EP183653
  • DOI -
  • Views 101
  • Downloads 0

How To Cite

Hifsa Shahid (2016). Comparison of Gain Measurement Techniques for Characterization of Quantum Dot Lasers. Mehran University Research Journal of Engineering and Technology, 35(4), 493-504. https://europub.co.uk/articles/-A-183653