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Title: Microscopy imaging system and method employing stimulated raman spectroscopy as a contrast mechanism

Patent ·
OSTI ID:1027112

A microscopy imaging system includes a first light source for providing a first train of pulses at a first center optical frequency .omega..sub.1, a second light source for providing a second train of pulses at a second center optical frequency .omega..sub.2, a modulator system, an optical detector, and a processor. The modulator system is for modulating a beam property of the second train of pulses at a modulation frequency f of at least 100 kHz. The optical detector is for detecting an integrated intensity of substantially all optical frequency components of the first train of pulses from the common focal volume by blocking the second train of pulses being modulated. The processor is for detecting, a modulation at the modulation frequency f, of the integrated intensity of the optical frequency components of the first train of pulses to provide a pixel of an image for the microscopy imaging system.

Research Organization:
President & Fellows of Harvard College (Cambridge, MA)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-07ER15875
Assignee:
President & Fellows of Harvard College (Cambridge, MA)
Patent Number(s):
8,027,032
Application Number:
12/196,746
OSTI ID:
1027112
Country of Publication:
United States
Language:
English

References (10)

The Stimulated Raman Effect journal November 1967
Coherent Raman gain spectroscopy using CW laser sources journal March 1978
FM spectroscopy detection of stimulated Raman gain journal January 1983
Ultrahigh sensitivity stimulated Raman gain spectroscopy journal January 1980
Frequency‐modulated shot noise limited stimulated Raman gain spectroscopy journal February 1980
Surface vibrational spectroscopy using stimulated Raman scattering journal December 1979
Femtosecond stimulated Raman microscopy journal April 2007
Inverse Raman spectroscopy in dye solutions with synchronized cw picosecond lasers journal October 1984
High-sensitivity vibrational imaging with frequency modulation coherent anti-Stokes Raman scattering (FM CARS) microscopy journal January 2006
Sensitivity limitations for CW stimulated Raman spectroscopy journal September 1977