Abstract

We studied the nonlinear signal generated in the fiber at an anti-Stokes wavelength during the delivery of the picosecond (ps) pump and Stokes beams in coherent anti-Stokes Raman scattering (CARS) microscopy. A small non-phase-matched four-wave mixing (FWM) signal was prevalently observed in the fiber at the power level where other nonlinear processes, including self-phase modulation and cross-phase modulation, were well suppressed. We analyzed the features of the FWM signal generation by varying the location of temporal overlap between two input pulses in the fiber to compare this to the CARS signal generated in the sample. Numerical modeling based on the nonlinear Schrödinger equation was also conducted and clearly explains the results in the experiment. In addition, we experimentally verified the interferometric feature of this FWM signal with the CARS signal by employing a phase-shifting unit, which potentially suggests the use of the FWM signal as a local oscillator for the interferometric CARS system.

© 2010 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Picosecond anti-Stokes generation in a photonic-crystal fiber for interferometric CARS microscopy

Esben Ravn Andresen, Søren Rud Keiding, and Eric Olaf Potma
Opt. Express 14(16) 7246-7251 (2006)

Fiber delivered probe for efficient CARS imaging of tissues

Mihaela Balu, Gangjun Liu, Zhongping Chen, Bruce J. Tromberg, and Eric O. Potma
Opt. Express 18(3) 2380-2388 (2010)

Delivery of picosecond lasers in multimode fibers for coherent anti-Stokes Raman scattering imaging

Zhiyong Wang, Yaliang Yang, Pengfei Luo, Liang Gao, Kelvin K. Wong, and Stephen T. C. Wong
Opt. Express 18(12) 13017-13028 (2010)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription