2012 Fiscal Year Final Research Report
Development of novel fiber-based light sources for coherent Raman scattering imaging
| Project/Area Number |
23760055
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | レーザ |
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| Research Abstract |
This research focused on the development of novel fiber sources for rapid and stable spectral imaging in a coherent Raman scattering microscope. An optical parametric oscillator as well as a stable supercontinuum source were developed using a highly nonlinear optical fibers with their zero dispersion wavelengths tuned to near-infrared wavelengths. Having established the light sources, a coherent anti-Stokes Raman scattering (CARS) microscope and a near-field CARS microscope were developed. CARS spectra of DNA constituent molecules in the finger-print region were measured without modifying the group delay between the pump and the Stokes pulses, significantly decreasing the data acquisition time. Moreover, high resolution CARS imaging was realized for an isolated single-walled carbon nanotube with spatial resolution of 60 nm and spectral resolution of 30 cm^<-1>. These results were published in a scientific literature.
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