title: Two-color two-photon 4Pi fluorescence microscopy.
abstract: In 4Pi fluorescence microscopy the point-spread function is composed of a strong central lobe accompanied by interference sidelobes that produce artifacts in the image. We propose to combine two-color two-photon fluorescence microscopy and 4Pi fluorescence microscopy to overcome this sidelobe problem. Simulation results show that a single sharp fluorescence spot can be produced by use of two excitation wavelengths of 400 and 800 nm and detected at 350-nm emission wavelength.
authors.affiliation: Laser Technology Laboratory, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan. chen@postman.riken.go.jp
authors.forename: Jianfang
authors.initials: J
authors.lastname: Chen
authors.forename: Katsumi
authors.initials: K
authors.lastname: Midorikawa
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D031541:Fluorescence Resonance Energy Transfer / Q000295:instrumentation* / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000295:instrumentation* / Q000379:methods*; D018613:Microscopy, Confocal / Q000295:instrumentation / Q000379:methods; D036641:Microscopy, Fluorescence, Multiphoton / Q000295:instrumentation* / Q000379:methods*