Suppression of white light generation (supercontinuum) in biological media: a pilot study using human salivary proteins

C. Santhosh; A. K. Dharmadhikari; K. Alti; J. A. Dharmadhikari; D. Mathur

doi:10.1117/12.729518

12 February 2007 Suppression of white light generation (supercontinuum) in biological media: a pilot study using human salivary proteins

C. Santhosh, A. K. Dharmadhikari, K. Alti, J. A. Dharmadhikari, D. Mathur

Author Affiliations +

Proceedings Volume 6439, Optics in Tissue Engineering and Regenerative Medicine; 64390Q (2007) https://doi.org/10.1117/12.729518
Event: SPIE BiOS, 2007, San Jose, California, United States

Abstract

Propagation of ultrashort pulses of intense, infrared light through transparent medium gives rise to a visually spectacular phenomenon known as supercontinuum (white light) generation wherein the spectrum of transmitted light is very considerably broader than that of the incident light. We have studied the propagation of ultrafast (<45 fs) pulses of intense infrared light through biological media (water, and water doped with salivary proteins) which reveal that white light generation is severely suppressed in the presence of a major salivary protein, &agr;-amylase.

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C. Santhosh, A. K. Dharmadhikari, K. Alti, J. A. Dharmadhikari, and D. Mathur "Suppression of white light generation (supercontinuum) in biological media: a pilot study using human salivary proteins", Proc. SPIE 6439, Optics in Tissue Engineering and Regenerative Medicine, 64390Q (12 February 2007); https://doi.org/10.1117/12.729518

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KEYWORDS

Proteins

Water

Atmospheric propagation

Refractive index

Ultrafast phenomena

Infrared radiation

Raman spectroscopy

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