| Sciencetech Model 9055 direct drive monochromator |
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This optional monochromator has an asymmetrical Czerny-Turner optical layout with an aperture of f/3.5.
It contains up to 3 gratings in a turret, consequently covering a broad wavelength range with resolution better than 0.2 nm
(depending on the installed gratings). Input and output slits are continuously adjustable by micrometer screws. This monochromator can
be used only in a computer controlled scanning mode, no manual wavelength selection is possible. The monochromator control routine is
incorporated into the TimeHarp 200 and PicoHarp 300 software.
Link to Sciencetech webpage |
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| Sciencetech Model 9030 monochromator |
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A standard building block featuring low temporal dispersion, high throughput and low stray light level. This Seya-Namioka type monochromator has 100 mm focal length and an aperture of f/3.2. The standard configuration contain a 32 mm × 32 mm aberration corrected concave holographic grating with 1200 lines/mm, blazed at 450 nm. The spectral (linear) dispersion is 8 nm/mm. The delivered set of interchangeable slits with 0.5, 1.0 and 2.0 mm width therefore provide 4, 8 and 16 nm spectral bandwidth, respectively. Other gratings are available upon request. The monochromator can optionally be equipped with a stepper motor. The monochromator control routine is
then incorporated into the TimeHarp 200 and PicoHarp 300 software.
Link to Sciencetech webpage |
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| Sciencetech Model 9030DS double monochromator |
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Systems with MCP PMT detectors and ultrafast excitation sources can exploit the advantages of the Sciencetech 9030DS. In this double subtractive monochromator, the two gratings operate in a subtractive dispersion mode. The first monochromator selects a bandpass and the second monochromator then removes the temporal and angular aberrations (dispersions). The result is superior stray light rejection and ultimate time resolution. The monochromator can optionally be equipped with a stepper motor. The monochromator control routine is then incorporated into the TimeHarp 200 and PicoHarp 300 software.
Link to Sciencetech webpage
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| Germanium Single Photon Detector |
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This NIR sensitive photon sensor is designed for high-speed applications at the 800-1500 nm spectral range. The detector is based on Judson J16 series germanium avalanche photodiode encapsulated in a metal dewar with sapphire window. The internal gain, response speed and dark noise level is a sensitive function of the reverse bias voltage applied to the diode. The power supply unit was specially designed by PicoQuant to operate the diode in single photon counting mode with optimal performance. The detector must be cooled to liquid nitrogen temperature to operate.
Link to Judson Technologies webpage
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| Hamamatsu H10330-series NIR-PMT |
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These special photomultipliers are suitable for single photon counting in the NIR and replace the former used H9170-Series. The H10330-45 features an InGaAsP photocathode and is sensitive in the wavelength range from 950 to 1400 nm. The H10330-75 variant has an InGaAs photocathode and its sensitivity range is extended to 1700 nm. The module has a thermally insulated sealed-off housing evacuated to a high vacuum. No liquid nitrogen, vacuum pumps nor water cooling is necessary.
Link to Hamamatsu webpage
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| Hamamatsu R3809U-5x series MCP-PMT |
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These are the fastest photon counting detectors today. Various photocathode materials cover the wavelength range from 160 to 910 nm. Using this detector and Ti:Sapphire laser excitation, instrument response functions as short as 32 ps were achieved with the FluoTime 200. The modules have a dedicated high voltage power supply. Optionally, they can be mounted into a thermoelectrically cooled housing. In this case, water cooling is necessary.
Link to Hamamatsu webpage
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| Xenon flashlamp |
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The xenon flashlamp emits approximately 400 ns broad flashes at up to 300 Hz repetition rate, ideal for investigation of slow luminescence decays, like phosphorescence or lanthanide emission. A dedicated ScienceTech 9030 monochromator is used to
select the desired excitation wavelength from the broad xenon emission spectrum. The lamp requires only 12V power and an external trigger signal. The latter can be generated by e.g. the NanoHarp 250 multiscaler board,
which is typically used in connection with the flashlamp. |
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| Oxford Instrument Optistat series cryostat |
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The sample chamber is large enough to accommodate an Oxford Instruments OptistatDN series cryostat.
This optional component allows low temperature photoluminescence measurements to be made. Precise control of the
sample temperature is possible with various cryostat types from 2.3 to 500 K. A stand-alone digital cryostat controller is included.
Link to Oxford Instruments webpage
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| Glan-Taylor polarizers |
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Glan-Taylor polarizers can be optionally mounted in the emission arm as well as in the excitation arm. These polarizers feature a spectral range of 250-2700 nm at a very high contrast. The horizontal, vertical and magic angle conditions are clearly marked on the mounts. Mounting and unmounting of the polarizers can easily be done at any time. |
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| Sample holders |
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The FluoTime 200 can be equipped with a cuvette holder and a front face sample holder. The standard cuvette holder is designed for 1 cm × 1 cm path length cuvettes and is also prepared for a water circulation system with easily accessible water inlets. As an alternative a front face sample holder can be mounted to investigate solid samples. Other types of sample holders can be also be used upon special request. |
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| Peltier cooled sample holder |
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The FluoTime 200 can be equipped with a peltier cooled cuvette holder with integrated magnetic stirrer from Quantum Northwest. The holder is designed for 1 cm × 1 cm path length cuvettes. The temperature can bet set between approx. -50°C and +100°C using an external control unit or alternatively be programmed via a dedicated software and USB interface.
Link to Quantum Northwest webpage |
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| Multipass cell |
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For very low emission intensities, the FluoTime 200 can be equipped with a multipass cell to increase the effective excitation volume and hence the signal strength. Two mirrors next to the cuvette holder are used to reflect the excitation beam several times through the sample. These multi-excitations lead to a broader overall instrument response function, which means that the multipass cell is best suited for long lived decays (phosphorescence). |
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