We developed an integrated monochromatic excitation light source integrating sphere based detection system to accurately characterize the absolute photoluminescence quantum efficiency of commonly used polymer light emitting films without using a reference sample. Our methodology is similar to the method reported by de Mello et al. [Adv. Mater. 9, 230 (1997)] In this Note, we show that the absol...

Using correlated photons from spontaneous parametric downconversion, we have measured both the absolute quantum efficiencies and the time responses of four single-photon detectors. Efficiencies as high as (76.4 ± 2.3)% (at 702 nm) were seen, which to our knowledge are the highest reported single-photon detection efficiencies. An auxiliary retroreflection mirror was found to increase the net det...

Silicon photomultipliers (SiPM) are recent detectors studied by many groups. Their proprieties (compact form, insensitivity to magnetic fields, low voltage power supplies...) are promising for various scientific fields, from high energy physics calorimetry to medical imaging application. An accurate measurement of the SiPM parameters is needed to integrate these devices in experimentation. Abso...

We have directly measured the absolute efficiency of the 9.8-eV M -band luminescence from the decay of Ar2* excimers in solid Ar bombarded by 1.5-MeV He 1 and 10–50-keV H ions. About 54% of the electronic energy deposited by the projectiles is converted to 9.8-eV luminescence energy, or about 5.5 photons per 100-eV deposited. The efficiency is also found to be independent of ion and ion energy ...