LIF instrument is based on a laser excitation system at 266 nm (4th harmonic of a Q-switched Nd:YAG laser (LS-2147, Lotis II), 15 ns pulses, 10 Hz repetition rate) and a 0.30 m spectrograph with a 300 lines/mm grating (TMc300 Bentham) coupled to an intensified charged coupled detector (2151 Andor Technologies). The temporal gate of the detector operates at zero-time delay with respect to the arrival of the laser pulse to the surface of the sample and with a width of 3 μs. The sample is illuminated by the laser at an incidence angle of 45° with pulses of around 0.1 mJ using a laser spot size of 1 × 2 mm2. LIF spectra are recorded at 300 nm intervals in the wavelength range of 300–700 nm with a spectral resolution of 3 nm. Cut-off filters at 300 and 360 nm are used to reduce the scattered laser light from the surface of the sample and to avoid the second-order diffraction. The LIF spectra are acquired in the accumulation mode.

Dataset/Data package (images, spectra, other)
Report
spectra in *.csv

Nondestructive (no permanent damage or alteration)
Noninvasive (no physical alteration)

Lotis (laser), Bentham (spectrograph), Andor Technologies (ICCD camera)

Custom

small spot
micro