The standard ozone-free 150W Xe arc lamp can be replaced with an Hg/Xe source. The instrument’s unique double-prism excitation and emission monochromators offer very low stray-light and no spurious linear polarization effects caused by instruments that use diffraction gratings. These are both extremely important as CPL signals tend to be very weak.
180° optical system with unpolarized excitation light reduces artifacts generated by fluorescence anisotropy allowing the sample’s core properties to be determined.
The CPL-300 is designed with two monochromators: an excitation monochromator generates monochromatic depolarized light which excites a chiral sample and an emission monochromator collects the fluorescence light emitted by the sample. A unique piezoelastic modulator and ultra-sensitive photomultiplier tube allow detection of the CPL signal
Chiral properties of molecules in both liquid and solid states can differ greatly. Many of the devices used in today’s advanced technological fields of research are based on circularly polarized light-emitting molecules. CPL is an ideal technique for use with these solid-state samples.
The CPL-300’s unique 180° linear optical design provides pure, unpolarized excitation light allowing the elimination of artifacts due to fluorescence anisotropy. Samples such as KBr pellets and PMMA films are easily measured providing highly reliable CPL spectra).
CPL measurements on samples with known macroscopic anisotropy such as single crystals are routinely reported in literature using a dedicated CPL spectrometer. In addition, measurements on solid-state samples are being reported today using the JASCO CPL-300 Spectrometer.