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Meadowlark Optics - Wave Plates 6/24 LB 2024

Simplified Approach Makes Two-Photon Multicolor Imaging Less Costly

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Tilman Franke,1 Jose L. Serrano-Velez,2,3 Nydia L. Rivera-Rivera,2,3 Eduardo Rosa-Molinarz,3 and atthias Langhorst1
1FEI Munich (Formerly Till Photonics, 2University of Puerto Rico-Rio Piedras, 3University of Puerto Rico-Medical Sciences

A fixed-wavelength laser in combination with a nondescanned hyperspectral detection system obtains clean images when used with triple-stained samples with all dyes excited simultaneously. Two-photon microscopy (TPM) is the method of choice for imaging biological samples in vivo, with cellular resolution in three dimensions. Multicolor imaging with several fluorophores – standard in single-photon microscopy – also is desirable in TPM, but existing approaches using multiple lasers are expensive. Commonly used fluorescent dyes are excited with light ranging from the...Read full article

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    Published: February 2014
    Glossary
    fluorescence
    Fluorescence is a type of luminescence, which is the emission of light by a substance that has absorbed light or other electromagnetic radiation. Specifically, fluorescence involves the absorption of light at one wavelength and the subsequent re-emission of light at a longer wavelength. The emitted light occurs almost instantaneously and ceases when the excitation light source is removed. Key characteristics of fluorescence include: Excitation and emission wavelengths: Fluorescent materials...
    hyperspectral imaging
    Hyperspectral imaging is an advanced imaging technique that captures and processes information from across the electromagnetic spectrum. Unlike traditional imaging systems that record only a few spectral bands (such as red, green, and blue in visible light), hyperspectral imaging collects data in numerous contiguous bands, covering a wide range of wavelengths. This extended spectral coverage enables detailed analysis and characterization of materials based on their spectral signatures. Key...
    photon flux
    Photon flux refers to the rate at which photons (particles of light) pass through a unit area per unit time. It is a measure of the intensity or brightness of light in a specific region of space or at a particular point. Units: Photon flux is typically measured in units of photons per second per square meter (photons s-¹ m-²) or photons per second per square centimeter (photons s-¹ cm-²). Directionality: Photon flux can be measured in a specific direction, such as...
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