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

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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 counter

  • 800-1700 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

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