Time-resolved spectroscopy characterization

• Picoharp 300 TCSPC emission decay measurements with time resolution down to 60 ps in the range 400-850 nm. Excitation sources are pulsed lasers with wavelengths and time resolutions: 340 nm (LED, 310 ps), 375 nm (90 ps), 405 nm (60 ps), 483 nm (110 ps), and 658 nm (80 ps). Festia, BNM/Essi
• Edinburgh Instruments FLS-1000 fluorescence spectrophotometer for phosphorescence decay measurements at 10 µs resolution. Excitation source is a microsecond flashlamp: optical pulses of 1.5–2.5 µs, repetition rate 0.1 Hz-100 Hz. Festia, BNM/Essi
• Femtosecond transient absorption (pump-probe) with 100 fs time resolution. Coherent Inc. Libra F with Vitesse seed and Evolution 15/30 amplifier lasers with Light Conversion TOPAS-C OPA with output range 240–2600 nm. The monitoring system is CDP Systems Excipro operating in the 400–1400 nm range. Festia, SLAM/Essi
• Flash-photolysis: Self-built nanosecond transient absorption device. Monitoring in 400–1600 nm range with 100 ns time resolution. Excitation laser Ekspla NT342B with 3–5 ns pulse duration, 10Hz repetition rate, output selectable between 355nm third harmonic and 410–2600 nm from OPO. Festia, SLAM/Essi
• Bruker Invenio-R FTIR spectrometer with rapid scan option for >70 spectra/s at spectral resolution 16 cm-1, and step/slow scan option for temporal resolved spectroscopy down to 6 µs resolution. External trigger option for the scan. Red Labs, SPM/Suvi
• Fluorescence lifetime imaging microscope MicroTime 200 (PicoQuant) with inverted microscope IX 73 from Olympus with custom made incubator. Computer controlled 2-dimensional piezo objective scanning with maximum 80 μm x 80 μm scan range at nominal 1 nm positioning accuracy. Detectors are Hybrid-Photomultiplier Tubes (PMA Hybrid Series), Instrument response typ. 120 ps (FWHM) in 300–720 nm range. Data acquisition is based on Time-Correlated Single Photon Counting (TCSPC) in Time-Tagged Time Resolved (TTTR) mode. Simultaneous data acquisition of two detection channels. Excitation sources: 375, 405, 483, and 658 nm (< 130 ps), burst mode option. Objectives: 100 × Oil immersion, 60 × water immersion, 40 × air spaced. Festia, BNM/Essi