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Features Include :
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Guaranteed
S/N ratio of >6000:1
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Count rates
of up to 100MHz
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Resolution
from 0.05 – 18nm
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Stray Light
Suppression of 1 x 105
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Automated
spectral correction
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Lifetimes
from 100picoseconds to 10 microsecond
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High dynamic
range and temporal resolution
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Time
Correlated Single Photon Counting operation
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Fully
computer controlled through Windows software
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Full data
reconvolution using a non-linear least square fitting
routine
The FLS920 is a modular, computer
controlled L - geometry spectrometer for acquiring steady
state luminescence spectra, time resolved fluorescence
spectra and the associated fluorescence decays in the
ultraviolet - visible - near infra red spectral range with
single photon counting sensitivity. The steady state mode
uses a single photon counting, fast photon counter scalar
PC plug-in card for steady state measurements. This card
operates with count rates up to 100MHz . For fluorescence
lifetime acquisition the system employs the technique of
Time Correlated Single Photon Counting: this technique is
widely accepted to be the method of choice for maximum
sensitivity, dynamic range, accuracy and precision. The
sensitivity of the system guarantees a signal to noise
ratio of 6000:1 for water Raman spectrum measured with
excitation at 350 nm, emission at 397 nm, with a 1 second
integration time and 5 nm spectral bandwidth.
The configuration of the FLS920
consists of the following hardware :
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CW 450 W xenon arc lamp
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Nanosecond pulsed flashlamp, 1ns FWHM
pulse duration. Supplied with driver and start
synchronisation photomultiplier, gas filling and vacuum
pumping station
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Excitation monochromator: 300mm focal
length, Czerny-Turner design triple grating turret
facility with computer controlled wavelength selection
and computer controlled continuously adjustable slits.
Stray light rejection 1:105 , resolution down to 0.05nm
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versatile sample chamber with
integral controller, safety shutters, signal attenuator
and filter holders
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Emission monochromator: 300mm focal
length, Czerny-Turner design triple grating turret
facility with computer controlled wavelength selection
and computer controlled continuously adjustable slits.
Stray light rejection 1:105 , resolution down to 0.05nm
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single photon counting stop
photomultiplier
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TCC900 card for TCSPC data
acquisition
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PCS900 card for single photon
counting data acquisition
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Dedicated PC running F900 software
for comprehensive spectrometer control, performance
monitoring, fluorescence spectral data acquisition,
correction and analysis library.
Software Interface :
In keeping
with the modularity of the FLS920 spectrometer, the F900
advanced software is a user friendly package. Irrespective
of the system configuration and accessories, the F900
software provides the user with complete control.
Measurement set-up and data acquisition is made through a
transparent menu system and the measurement modes within
the software reflect the system configuration by means of
a simple operating environment. Control of the hardware
settings on both the TCC900 and the PCS900 data
acquisition cards are easily accessed through the F900
software.
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System Flexibilty :
The modular design of every
spectrometer provides maximum flexibility to meet the
requirements for a wide range of applications. We offer a
wide range of accessories for the FLS920 together with a
range of standard upgrade options for this spectrometer.
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Data Acquisition :
The FLS920
incorporates state of the art single photon counting
technology in the form of the TCC900 and PCS900 computer
plug-in card. The PCS900 card is a fast pulse count scalar
card that can operate with count rates of up to 100MHz.
The TCC900 card is our PC plug-in card for Time Correlated
Single Photon Counting Data Acquisition. TCSPC is widely
accepted to be the method of choice for maximum
sensitivity, dynamic range, accuracy and precision.
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Information
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Brochure (5mb)