We use steady state and time-resolved spectroscopic techniques to investigate the molecular processes in two significant systems.

Ultrafastspectroscopypdf

●About the description: the series of this product have the same material, technology and design, different sizes only, please note.

Femtosecond spectroscopyapplications

We use surface functionalization to enable colloidal stability and potential for bioconjugation of conjugated-polymer nanoparticles.  We are characterising these materials to understand their luminescence efficiencies, cytotoxicity and internalisation by cells.

We are building a new two-dimensional electronic spectrometer that has an accuracy of 28 as. This spectrometer uses femtosecond laser pulses in the visible region generated using a noncollinear optical parametric amplifier.

Ultrafastspectroscopyppt

2. ND3.0 Filter Characteristic Sbustrate: optical galss Thickness: 1.85mm T=0.1% Surface quality: 60/40 Transmitted Wavefront RMS: λ/4  Parallelism: 30s

Our system of interest is the highly fluorescent conjugated polymer nanostructures. We currently focus on using femtosecond transient absorption spectroscopy and fluorescence upconversion spectroscopy to understand the effect of the shape of the nanostructure on the energy and charge transfer processes in these structures. Because conjugated polymers are used as organic solar cell materials, a good understanding of these processes will lead to strategies for improving the efficiency of organic solar cells.

Another system of interest is molecules that undergo singlet fission. Our work aims to understand the mechanism of singlet fission by controlling the intermolecular distance and orientation of the pair of molecules that are involved in singlet fission.

Femtosecond spectroscopypdf

Femtosecond spectroscopyprinciple

Reflective ND filters consist of thin film optical coating, typically metallic, that have been applied to a galls substrate. The coating can be optimized for specific wavelength ranges such as UV-VIS or NIR. Thin film coaitng primarily reflects light back toward the source. Special care should be taken to ensure the reflected light does not interfere with the system setup.

In the near future, we will use our two-dimensional electronic spectrometer to study coherent processes in synthetic light-harvesting systems including conjugated polymers and gold nanorods.

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●About color: due to the influence of ambient light, color difference of the display and flash photography, the color of the product may have some color difference. Detailed color is in accordana with the final product.

Femtosecond spectroscopywikipedia

The Laboratory for Femtosecond Spectroscopy uses a variety of techniques to conduct cutting-edge experiments to answer key questions in chemistry and photo-physics.

·Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.

UltrafastSpectroscopyapplication

·Optolong filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.

Neutral Density (ND) filters are designed to reduce transmission evenly acorss a portion of a specific spectrum. ND filters are typically defined by their Optical Density (OD) which describes the amount of energy blocked by the filter. A high optical density value indicates very low transmission, and low optical density indicates high transmission (Equations 1-2). ND filters can be stacked to achieve a customs optical density. To calculate the final system OD, simply add the OD of each filter together.

The high-energy excited states of conjugated polymers are associated with the photovoltaic properties of these materials. We use pump-push-probe spectroscopy to investigate the crossing between these high-energy states with the charge-transfer state to further understand the charge separation process of conjugated polymer materials.

Femtosecond spectroscopyNobel Prize

●About coating: the interference filter will show different colors under different light, which is a normal phenomenon. Please refer to the material object.

We use femtosecond pump-probe spectroscopy to elucidate the mechanism of singlet fission. In particular, we develop novel methods of controlling the intermolecular distance and orientation of the pair of molecules involved in singlet fission.

We use aqueous dispersions of conjugated polymers (conjugated polymer nanoparticles) to fabricate organic light-emitting diodes. Characterisation of these diodes in order to understand their electroluminescence efficiencies, and modelling of the underlying exciton annihilation processes, are under way.

WARNING: The filters of Optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.