donna strickland guelph-waterloo physics institute (gwpi) department of physics and astronomy...
TRANSCRIPT
Donna Strickland
Guelph-Waterloo Physics Institute (GWPI)Department of Physics and Astronomy
University of Waterloo
System layout
r
Argon Ion Laser
Ti:sapphire rodOscillator
Stretcher
gratingmirror
Regenerative amplifierFrequency doubled 10Hz, Nd:YAG
Ti:sapphire rod
gratinggratings
Compressor
Dual Wavelength Spectra
Cross-Correlator
BBO
polarizer
half-waveplate
delayline
delayline
AgGaS2
AgGaS2
MIRCross-correlator
MIRspectrometer
Mid-Infrared Generation
Fresnel Losses
Absorption
Photon conversion
efficiency
Energy Input (mJ)0.0
0.1 1.00.0
1.0
2x10-2
1x10-2
Two-Photon Absorption
Two-Photon Absorption
Yb:Fibre Lasers
Two-Colour Fibre System
Two-colour seed(ideally an oscillator)
Two-colour fibre amplifier
Two-colour compressor
Two-Colour Fibre Seed
Ti:sapphire Oscillator
Photonic
Crystal Fibre
Seed Spectrum
Wavelength (nm)
Two-Colour Fibre Amplifier
Yb-doped double-clad
fibreDichroic mirrors
Notch filter
10 m
10m
Faraday Isolator
Two-colour seed
2W965 nm
Pump diode4W, 915 nm Pump Diode
Amplifier Spectrum
Wavelength (nm)
Two-Colour Fibre Compressor
5cm
Two-Colour Cross-Correlation
100080060040020000.00
0.10
0.20
Column 3
correlation time (fs)
Mid-infrared and next steps
GaSeHgCdTe detector
•new pre-amplifier - single clad
•new two colour oscillator - Yb:fibre or Yb:solid state
•incorporate fibre elements into amplifier - Bragg grating rather than interference filter
Acknowledgements
Post-doctoral Fellows
Dongfeng LiuJie Song
Undergraduates
Jason YoungSarah JohnsonChris FerriePaul Carr
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