Optical Spectroscopy at ASL


 

Instrument Manager: Andy (7-1622)
Trainers:
Mary and Tina (FT-IR, UV-vis)
Saman (Raman)

Bio-Rad FTS-60 FTIR with UMA-500 Microscope

ir_new.jpg (31725 bytes)This main bench of this spectrophotometer has exchangable optics for Mid-IR and Near-IR operation and it is coupled to an IR microscope for small sample area studies. The instrument can be configured to provide the following spectral ranges:

Main bench: 
Mid-IR 400-4,000 cm-1
Near IR 4,000-10,000 cm-1

Microscope: 
Mid-IR 700-4,000 cm-1
Near-IR 4000-7500 cm-1
   

The microscope can be set up to collect transmission or reflectance data. There are attachments available for the main bench to perform Diffuse Reflectance, Grazing Angle Reflectance and Attenuated Total Reflectance experiments.

FTS-60 Operation [PDF]

raman.jpg (15023 bytes)BIORAD FT-RAMAN II SPECTROMETER

The FT-Raman spectrophotometer uses a Nd:YAG infrared laser and a liquid nitrogen cooled germaniun detector. This instrument can be used to record Raman spectra for liquid, powder and solid samples, providing both Stokes and anti-Stokes lines up to a range of 4,000 cm-1. A signal to noise ratio of 800:1 is typical with the liquid samples.

UV-VISIBLE SPECTROPHOTOMETER

uv_new.jpg (22281 bytes)Cary Model 1
Range: 190-900 nm
Spectral Bandwidth: 0.2 nm to 4 nm

This is a double beam, ratio recording, Czerny-Turner spectrophotometer, which is controllet by a PC. It is capable of making concentration measurements; scan overlay; spectral addition, subtraction, division and averaging; spectral derivatives and smoothing selection. An integrating sphere attachment also provides the option of making diffuse reflectance measurements of solid samples.

UV-Vis Cary 1E Operation

SPECTROFLUOROMETER

Photon Technology International model QM-2 is a modular spectrofluorimeter for recording excitation or emission spectra, synchronous scans, and lifetime phosphorescence studies. It is equipped with two lamps--a 75 watt Xenon arc lamp, used in steady state measurements, and a pulsed lamp, used for phosphorescence or gated and delayed fluorescence measurements. The system allows for addition and subtraction of data, spectral correction and output of files in ASCII and binary forms.


Wavelength range: 
excitation: 190-900 nm
emission: 190-900 nm

Sample types: solutions and solids

Sample size: 2 mLs

Accessories: 
thermostated sample housing
solid sample holder

Fluorimeter Operation

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