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Postdoctoral Researcher : Southampton, United Kingdom
Employer: University of Southampton
Website: http://www.phys.soton.ac.uk
Location: Physics and Astronomy , University of Southampton, Southampton, South East England, United Kingdom
Type: Postdoctoral
Posted: March 12, 2012
Expires: May 01, 2012
Requisition number: 091912WF

job description

Postdoctoral Researcher
Quantum, Light & Matter Group
University of Southampton – Terahertz Laboratories Group

Location: Highfield Campus
Salary: £27,578 to £33,884
Full Time Fixed Term
Closing Date: Tuesday 01 May 2012
Reference: 091912WF

Terahertz Laboratories Group

Most commercial THz spectrometers are time domain spectrometers; they exhibit a very high signal-to-noise ratio (50 dB) but quite low power (few micro-Watts). The major competing THz technology is that of quantum cascade (QC) lasers, which generate radiation with tens of mWatts of power. However, the power advantage of QC lasers is lost by the lack of sensitive detection techniques, and hence they are not used commercially. Until now researchers have tried to combine the technologies of THz time domain spectrometers and Quantum cascade lasers (QC) but the two geometries have proven very difficult to integrate, with antenna emitters in particular proving incompatible with integration.

However, a new geometry emerged in 2010, which can be used to generate broadband THz pulses and can provide an elegant means of coupling a THz pulse into the QC structure, directly, with great efficiency. Our task is to combine the high output power of quantum cascade lasers with the detection sensitivity and broadband nature of state-of-the-art time-domain technology.

The project is an EPSRC funded collaborative project between Physics at the University of Southampton, and Cavendish and Chemical Engineering at the University of Cambridge.

Our group has expertise in TDS and terahertz emitters, and we are looking for a researcher with experience in QCLs. Expertise in QCLs, cryogenics, cleanroom fabrication and THz-TDS are essential.

Please contact Vasilis Apostolopoulos, email: va2w07@soton.ac.uk for informal enquiries.

The closing date for this post is 1st May 2012.

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