Lactone Cleavage Reaction Kinetics of Rhodamine Dye at Liquid/Liquid Interfaces Studied by Micro-Two-Phase Sheath Flow/Two-Photon Excitation Fluorescence Microscopy

Langmuir ◽  
2005 ◽  
Vol 21 (4) ◽  
pp. 1299-1304 ◽  
Author(s):  
Takahira Tokimoto ◽  
Satoshi Tsukahara ◽  
Hitoshi Watarai
Keyword(s):  
Fluorescence Microscopy ◽  
Reaction Kinetics ◽  
Liquid Interfaces ◽  
Cleavage Reaction ◽  
Two Phase ◽  
Sheath Flow ◽  
Two Photon ◽  
Photon Excitation ◽  
Rhodamine Dye ◽  
Kinetics Of

Reaction kinetics of a two-photon excitation microparticle based immunoassay—from modelling to practice

2003 ◽  
Vol 105 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Pekka Hänninen ◽  
Matti Waris ◽  
Mika Kettunen ◽  
Erkki Soini
Keyword(s):  
Reaction Kinetics ◽  
Two Photon ◽  
Photon Excitation ◽  
Kinetics Of ◽  
Two Photon Excitation

Two-photon excitation fluorescence microscopy in living systems

1993 ◽  
Vol 51 ◽  
pp. 154-155 ◽  
Author(s):  
David W. Piston
Keyword(s):  
Confocal Microscopy ◽  
Fluorescence Microscopy ◽  
Singlet State ◽  
Excited Electronic State ◽  
Input Power ◽  
Two Photon ◽  
Simultaneous Absorption ◽  
Photon Excitation ◽  
Very High ◽  
Two Photon Excitation

Two-photon excitation fluorescence microscopy provides attractive advantages over confocal microscopy for three-dimensionally resolved fluorescence imaging. Two-photon excitation arises from the simultaneous absorption of two photons in a single quantitized event whose probability is proportional to the square of the instantaneous intensity. For example, two red photons can cause the transition to an excited electronic state normally reached by absorption in the ultraviolet. In our fluorescence experiments, the final excited state is the same singlet state that is populated during a conventional fluorescence experiment. Thus, the fluorophore exhibits the same emission properties (e.g. wavelength shifts, environmental sensitivity) used in typical biological microscopy studies. In practice, two-photon excitation is made possible by the very high local instantaneous intensity provided by a combination of diffraction-limited focusing of a single laser beam in the microscope and the temporal concentration of 100 femtosecond pulses generated by a mode-locked laser. Resultant peak excitation intensities are 106 times greater than the CW intensities used in confocal microscopy, but the pulse duty cycle of 10−5 maintains the average input power on the order of 10 mW, only slightly greater than the power normally used in confocal microscopy.

Two‐photon excitation fluorescence microscopy using a semiconductor laser

Bioimaging ◽  
1995 ◽  
Vol 3 (2) ◽  
pp. 70-75 ◽  
Author(s):  
Pekka E Hänninen ◽  
Martin Schrader ◽  
Erkki Soini ◽  
Stefan W Hell
Keyword(s):  
Fluorescence Microscopy ◽  
Semiconductor Laser ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

scholarly journals Axial Resolution Enhancement by 4Pi Confocal Fluorescence Microscopy with Two-Photon Excitation

2007 ◽  
Vol 33 (5-6) ◽  
pp. 433-443 ◽  
Author(s):  
Sylvia Glaschick ◽  
Carlheinz Röcker ◽  
Karen Deuschle ◽  
Jörg Wiedenmann ◽  
Franz Oswald ◽  
...  
Keyword(s):  
Fluorescence Microscopy ◽  
Resolution Enhancement ◽  
Confocal Fluorescence Microscopy ◽  
Axial Resolution ◽  
Two Photon ◽  
Photon Excitation ◽  
Confocal Fluorescence ◽  
Two Photon Excitation

Two-Photon Excitation Fluorescence Microscopy

2013 ◽  
pp. 2667-2671 ◽  
Author(s):  
Alberto Diaspro ◽  
Paolo Bianchini ◽  
Francesca Cella Zanacchi ◽  
Cesare Usai
Keyword(s):  
Fluorescence Microscopy ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation
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