Equipment and set-up

  • Picosecond fluorescence spectrochronograph 
    • Spectra Physics solid-state cw laser Millennia 6 W output, wavelength 532 nm
    • Coherent femtosecond oscillator Mira-900 (output power 1 W at 800 nm, tuning range 690 - 1000 nm, pulse width 120 fs, repetition rate 76 MHz)
    • Pulse selector (APE) (repetition rate of output pulses 15 kHz - 4 MHz, diffraction efficiency 60 %, contrast ration  > 100:1)
    • Harmonic generator (APE) (SHG: output wavelength range 350 - 500 nm, THG: output wavelength range 230 - 330 nm)
    • Solid-state Nd:YAG mode-locked picosecond laser Antares (Coherent) (25 W output at 1064 nm, 1 W output at 532 nm, pulse width 70 ps, repetition rate 76 MHz)
    • Cavity dumped synchronously pumped Model 702 (Coherent) dye laser (120 mW output power, pulse width 3 ps, tuning range with different dyes 570-880 nm, repetition rate 40 kHz-76 MHz).
    • Synchroscan Streak camera (temporal resolution 5 ps, spectral response 400-1100 nm, repetition rate 76 MHz, signal amplification 1000).
    • Time-correlated single-photon counting system SPC-150 (Becker & Hickl GmbH) (IRF with id 100-20 detector (Quantique) is 60 ps, IRF with HPM 100-40 detector (B&H GmbH) is 160 ps)
    • Double subtractive dispersion monochromator DTMc300 (Bentham instruments Ltd) (focal length 0.6 m, scanning range 300-1200 nm, spectral resolution 0.05 nm).
    • CCD cameras DV420A-OE and DU416A-LDC-DD from Andor Technology
    • Liquid helium cryostat 4.2 - 300 K from Utreks
    •  
  • Time-correlated single-photon counting system (EG&G Ortec) together with SPCM-AQR (Perkin Elmer) avalanche photodetector (time resolution 300 ps, dark count 22 Hz).
  • A selective spectroscopy setup
    • Solid-state cw laser Millennia 10 W output, wavelength 532 nm
    • Spectra Physics model 375 dye (570-710 nm) laser
    • Spectra Physics model 3900S Ti: sapphire (675-1000 nm) laser with adjustable 2.1 - 15 GHz spectral bandwidth
    • Shamrock 303i spectrograph from Andor Technology
    • Fibre coupled Jobin Yvon monochromator THR1500
    • CCD cameras DV420-OE and DV420A-OE from Andor Technology
    • Liquid helium cryostat 1.8 - 300 K from Utreks
    • Optistat DN liquid nitrogen cryostat  77 - 350 K from Oxford Instruments
    •  
  • Micro-Raman spectroscopy system (Renishaw).
  • Circular dichroism (CD) spectroscopy. This technique reveals information about a molecule’s chirality or “handedness”. The CD spectra can be used to uniquely identify chiral compounds and their configurations, predict the secondary structure of proteins and other biological macromolecules.
    • Chirascan-plus CD-spectrometer (Applied Photophysics), wavelength range: 170 – 1150 nm.
    • Detection modes: Simultaneous circular dichroism, absorption, and fluorescence detected CD.
    • Dynamic multi-mode spectroscopy
    • Total fluorescence detection 185 – 850 nm. Fibre optic connection to the external emission spectrometer.
    • In kinetic mode CD can be used to monitor and quantity ligand binding processes.
    •  
  • High-pressure instrumentation based on conventional and diamond anvil cells for optical measurements at variable pressures up to 70 kbar and temperatures down to 10 K.
  • Microspectroscopy setup
    • Olympus IX-71 inverted microscope
    • Shamrock 303i spectrograph from Andor Technology
    • CCD cameras DU-420A-BR-DD ja iXon 897 (EMCCD) from Andor Technology
    • Lasers: He-Ne 594 nm 2 mW (Melles-Griot 25-LYR-173-230), Nd-YAG 1064 nm 1W (Viasho)