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PD-LD Inc.

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Specialty photonics packaging company PD-LD Inc. of Pennington, N.J., has been granted US Patent No. 7,982,869, which protects the use of dual laser sources for analysis of a single substance. The technique, based on proprietary VBG (volume Bragg grating) laser wavelength stabilization, provides the underlying mechanism for shifted excitation Raman differential spectroscopy. CEO Vladimir Ban said that the patent will allow PD-LD to offer Raman excitation sources that extend portable and lab-based instruments, and that the patent is particularly relevant to the life sciences and security industries, where fluorescence is widespread.
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Published: March 2012
Glossary
raman spectroscopy
Raman spectroscopy is a technique used in analytical chemistry and physics to study vibrational, rotational, and other low-frequency modes in a system. Named after the Indian physicist Sir C.V. Raman who discovered the phenomenon in 1928, Raman spectroscopy provides information about molecular vibrations by measuring the inelastic scattering of monochromatic light. Here is a breakdown of the process: Incident light: A monochromatic (single wavelength) light, usually from a laser, is...
AmericasBiophotonicsBusinessdefensedual laser sourceslife sciencesNew JerseyPD-LD Inc.Raman spectroscopyRapidScansecuritySERDSshifted excitation Raman differential spectroscopyTest & MeasurementUS Patent 7982869VBG laser wavelength stabilizationLasers

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