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Details of Grant 

EPSRC Reference: GR/J39076/01
Title: FEMTOSECOND WHITE LIGHT SPECTROSCOPY OF POLYANILINE.
Principal Investigator: Monkman, Professor A
Other Investigators:
Researcher Co-Investigators:
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Department: Physics
Organisation: Durham, University of
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 1993 Ends: 30 September 1996 Value (£): 133,731
EPSRC Research Topic Classifications:
Materials Characterisation
EPSRC Industrial Sector Classifications:
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Summary on Grant Application Form
I have recently been given a Ti:Sapphire laser system by British Gas and funding from the University (51k) to convert this into a regeneratively amplified, femtosecond pulsed laser system. The laser will comprise an Argon ion pumped self-mode locked Ti:Sapphire oscillator, producing 30 fsec pulses, at 76 MHz repetition rate. The pulses will be amplified using chirped pulse amplification, in a cw pumped Ti:Sapphire regenerative amplifier, yielding pulses of ca. 100 fsec duration at 5mJ per pulse with a repetition rate variable between 10 and 250 KHz. Such high power pulses can be used to generate intense white light continua from the UV to the NIR. This system will allow us to undertake detailed time resolved photoinduced absorption and depolarisation analysis of the polyaniline family of polymers. At present no published data exists on the initial excitation and rapid decay (relaxation dynamics) of polyaniline. During this project I and the requested postdoc will construct the amplified laser system and continuim generator and make a rigorous study of the femtosecond dynamics of the excited states of the polyanilines. The data will be used to construct a theoretical model of the photoexcited states of polyaniline in conjunction with Prof Bredas and his research group at the University of Mons.
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