Circularly Polarized Luminescence Systems
CPL is the emission analogue to CD
Useful for Lanthanides, Proteins, and other Emissive Chiral Molecules
Is the chirality of emission important? A rapidly growing body of researchers saying Yes!
CPL is a field where you will make new inputs in science with nearly every experiment!
Every OLIS CPL is designed for direct digital acquisition of Lum(L) & Lum(R). View these signals individually
or after they are processed to CPL.
OLIS DSM 45
Scans PL quickly and easily without hardware rearrangement
Photoelastic modulator
Includes the unique OLIS Polarization ToolBox
Software includes data processing and presentation of the three acquisition modes
Extensive data analysis algorithms, and storage/ retrieval/ export to Excel are handled within the one OLIS program
OLIS DSM 172 UV/Vis/NIR
The original CD + CPL spectrophotometer
CD from 185-1700 nm; CPL 230-870 nm
Optional NIR CPL: excitation wavelengths from 800-2600 nm and optional addition of NIR emission components
Useful for CD, CPL, anisotropy, as well as absorbance and fluorescence.
Can be enhanced for phosphorescence lifetime
Introduced in 2008 & continuously updated to Win 10 era
OLIS DSM 245
Our second CD + CPL spectrophotometer
CD from 170-700 nm; CPL 230-870 nm
Useful for CD, CPL, anisotropy, as well as absorbance and fluorescence.
Can be enhanced for phosphorescence lifetime
Introduced in 2015 & continuously updated to Win 10 era
Looking for models that are both CD and CPL? Click here.
CPL SOLO Models, 6 versions
CPL Solo I:
Exquisitely sensitive using gated photon counter
300-850 nm
Introduced in 2019
CPL Solo II:
Exquisitely sensitive photon counting detector plus red-shifted PMT operating as a photon counter
400-1100 nm
Introduced in 2022
CPL Solo III:
Perfect for strong emission samples
InGaAs plus red-shifted PMT operating as a photon counter
800-1700 nm
Introduced in 2021
CPL Solo IV:
Perfect for weak & strong emission samples
Exquisitely sensitive “Majesty” photon
counting detector plus red-shifted PMT operating as a photon counter800-1700 nm
Introduced in 2022
CPL Solo V:
Perfect for strong emission samples
PbS (lead sulfide)
1100-2700 nm
Available in 2023
CPL Solo VI:
Perfect for weak & strong emission samples
Exquisitely sensitive “Majesty” photon
counting detector plus PbS (lead sulfide)1100-2700 nm
Available in 2023
CPL Solo UV/Vis
The only small & affordable CPL system
Less than half the price of all competitive alternatives
A small fraction the size of all alternatives
Entirely digital acquisition: no G-factors, no calibration, no lock-in amplifier, no 50 kHz PEM
Exquisitely sensitive using gated photon counter, useful 300-870 nm
Useful for CPL & polarization of fluorescence
Determine luminescene as fluorescence or phosphorescence with lifetime enhancement
NIR CPL Solo
The CPL Solo for NIR work
Useful 800-1700 nm
Entirely digital acquisition: no G-factors, no calibration, no lock-in amplifier
Switching between Lum(L) and Lum(R) at any rate
Freedom to measure Lum(L), Lum(R), or CPL
Two successful detectors are offered with three orders of magnitude in sensitivity separating them.
The CPL Solo exists because LED excitation is sufficient. There is no justification to purchase hardware which only adds to the size, complexity, and price if the only purpose of the instrument is CPL.
We recommend you run the sample on your fluorimeter and once you have determined the optimal excitation wavelength for CPL, choose the right LED Tube. Three LED Tubes are provided in the purchase price of the CPL Solo, a 365 nm and your choice for the other two. Additional LED Tubes can be purchased at a very reasonable price.
Hundreds of experiments have demonstrated that an LED is superior as the excitation source for CPL. (a) The LED is positioned millimeters to centimeters from the sample -- your choice, (b) 100% of its power is the appropriate wavelength -- compare with the xenon arc lamp whose power covers thousands of wavelengths, and (c) the stability of the LED is far superior to that of the xenon arc lamp, which is very helpful in long data acquisition experiments which are common in CPL. The LED Tubes include expertly selected and vetted LEDs running with OLIS electronics.
Read more about how OLIS CPLs compare to the competition.
Visit Publications, CPL to see papers we know of citing the CPL spectrometers
Resources
Download: Should CPLs have Xe Arc or LED
Download: Polarization Toolbox
Transition-Metal Isocorroles as Singlet Oxygen Sensitizers
Simon Larsen, Joseph A. Adewuyi, Gaël Ung, and Abhik Ghosh Inorg. Chem. 2023
Download: 6 versions of the CPL Solo