Ph.D. position on nano-engineering of semiconductor Quantum Dots ( France)

A quantum dot is a compound-semiconductor whose excitons are confined in all three spatial dimensions, leading to a sharper density of states than conventional structures. As a result, they have superior transport and optical properties. Several types of optoelectronic devices have been realized with quantum dots and remarkable properties have been demonstrated, in particular at III-Vlab, such as highly efficient mode-locking exceeding the state-of-the-art of conventional bulk and multiple quantum wells devices. The device performances of the current generation of InP-based quantum dots lasers are mostly limited by the inhomogeneous broadening, the polarization sensitivity and the low optical confinement of QDs, which result from their strain-driven nucleation process. We do believe that a disruptive approach based on the combination of strain-engineering, electronic coupling and design optimization of the nanostructures would allow for overcoming all these actual limitations.

Description

Within the PROPHET project you will be expected to:
• Process InP-based QD lasers using buried ridge stripe technology
• Perform static and dynamic laser characterization for the evaluation of the impact of strain-engineering on laser performances
• Contribute to long wavelength lasers design for gas sensing applications

Research Fields

Physics

Comment/web site for additional job details

III-Vlab is a joint Laboratory of "Alcatel Lucent Bell Labs" and "Thales Research &Technology", Route de Nozay, 91460 Marcoussis, France (www.3-5lab.fr)
Prophet is a Marie Curie Initial Training Network funded by the EU Framework Programme 7 (www.prophet-itn.eu)

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Requirements

Required Education Level

Degree	Master Degree or equivalent
Degree Field	Physics

Required Languages

Language	ENGLISH
Language Level	Good

Additional Requirements

You have a diploma in Material Sciences / Optics / Solid State Physics and have worked closely in III-V compounds semiconductor. Fluency in French is a plus but is not mandatory.

At the time of appointment, the researcher may not have resided or carried out his/her main activity in the country of the beneficiary for more than 12 months in the 3 years immediately prior to his/her appointment. Short stays such as holidays are not taken into account.

Company/Institute

III-Vlab

Photonic integrated circuit group
Large Company
Route de Nozay
91460 - Marcoussis
Ilde de France - FRANCE
fax +33 1 30 77 67 86
emailfrancois.lelarge@3-5lab.frwww.3-5lab.fr

Application details

Envisaged Job Starting Date

01/09/2011

Application Deadline

30/06/2011