Facilities

WITEC ALPHA300 RA – CONFOCAL RAMAN MICROSCOPE WITH AFM
Company Name
WITec GmbH, Ulm, Germany
Model Name
Alpha300RA AFM & RAMAN
Spectrograph
UHTS 300, Ultrahigh throughput lens based spectrograph with 300 mm focal length.
CCD
Andor Back illuminated CCD camera with >90% QE in the visible region. The CCD chip is a 1024 x 127 pixels with the pixel size of 24 microns
Description
The instrument is a WITec alpha300RA (WITec GmbH, Ulm, Germany) AFM, SNOM &RAMANcombined system. The laser is coupled into the microscope using a single mode optical fiber coupling and the RAMAN signal is collected into a multimode optical fiber which is connected to the UHTS 300 spectrograph equipped with a back illuminated CCD with better than 90% QE in the visible region.
Laser
532 nm DPSS laser with a maximum power after single mode fiber of around 70 mW.633 nm with maximum output power after single mode fiber coupling of 35 mW
Gratings
UHTS 300 is equipped with a motorized turret that can mount 3 gratings. The gratings available with the instrument are 600 g/mm BLZ 550 nm & 1800 g/mm BLZ 550 nm.
Optical Microscope
Modified Zeiss Axioscope.
Objectives
100X Zeiss 0.9 NA, 50X Zeiss 0.75 NA, 20X Zeiss 0.4 NA, 10X Zeiss 0.25 NA
INSTRUMENT STATUS
Working
HORIBA FLUOROLOG FLUOROSCENCE SPECTROMETER WITH TCSPC
Company Name
Horiba, USA
Model Name
Fluorolog 3 TCSPC
Excitation sources Steady-state
Broadband 450-W xenon arc lamp from UV to near-IR.
Excitation sources TCSPC
Fixed-wavelength “Plug-and-play”interchangeable NanoLED pulsedLEDs. Wavelengths of 295,330 and 570nm LEDs. Standardoptical pulse durations are < 200 ps (< 100 pstypical) for laser-diodes, < 1.5 ns for LEDs.Repetition rate up to 1 MHz.
Spectrometers
FL3-21, Single-grating emission and double-grating excitation monochromator.
Grating
1200-grooves/mm
Resolution
0.2 nm
Accuracy
±0.5 nm
Speed
150nm/s
Range
0-1300nm
Detector
RT298P (PMT)
Lifetimes measurable
< 100 ps to 100 microsecond lifetimes
INSTRUMENT STATUS
Working
FIELD EMISSION SCANNING ELECTRON MICROSCOPE (FE-SEM)
INSTRUMENT STATUS
To be installed soon
LIQUID CHROMATOGRAPHY- MASS SPECTROMETER (LC-MS/MS)
INSTRUMENT STATUS
To be installed soon