We report a theoretical study on the optical resolution of coherent nonlinear microscopy by means of double-sided Feynman diagrams. Through the use of the diagrams, we offer a simple technique to calculate the coherent transfer function (CTF), which is employed as the indicator of the optical resolution. In particular, we deal with the CTFs of coherent anti-Stokes Raman scattering (CARS) microscopy and stimulated Raman scattering (SRS) microscopy. Our results show that CARS and SRS microscopy possess nearly identical optical resolutions if a molecular-vibrational frequency of interest is assumed to be negligible compared with excitation photon energy. The peculiar image-formation properties of third-harmonic generation (THG) microscopy also can be explained by our technique.
© 2013 Optical Society of America
Original Manuscript: May 6, 2013
Revised Manuscript: August 16, 2013
Manuscript Accepted: August 18, 2013
Published: September 13, 2013
Naoki Fukutake, "Comparison of image-formation properties of coherent nonlinear microscopy by means of double-sided Feynman diagrams," J. Opt. Soc. Am. B 30, 2665-2675 (2013)