Two-Photon 3D Microfabrication of Organic, Inorganic, and Hybrid Materials

2015 ◽  
Author(s):  
David L. Andrews ◽  
James G. Grote
Keyword(s):  
Hybrid Materials ◽  
Two Photon

Femtosecond laser-induced two-photon polymerization of inorganic–organic hybrid materials for applications in photonics

2003 ◽  
Vol 28 (5) ◽  
pp. 301 ◽  
Author(s):  
J. Serbin ◽  
A. Egbert ◽  
A. Ostendorf ◽  
B. N. Chichkov ◽  
R. Houbertz ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Hybrid Materials ◽  
Organic Hybrid ◽  
Two Photon ◽  
Two Photon Polymerization

Two Photon Polymerization of Polymer?Ceramic Hybrid Materials for Transdermal Drug Delivery

2007 ◽  
Vol 4 (1) ◽  
pp. 22-29 ◽  
Author(s):  
A. Ovsianikov ◽  
B. Chichkov ◽  
P. Mente ◽  
N. A. Monteiro-Riviere ◽  
A. Doraiswamy ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Hybrid Materials ◽  
Transdermal Drug Delivery ◽  
Two Photon ◽  
Two Photon Polymerization

Theoretical investigations on one- and two-photon absorptions for a series of covalently functionalized hybrid materials based on graphene

2014 ◽  
Vol 38 (11) ◽  
pp. 5391-5401 ◽  
Author(s):  
Li Zhang ◽  
Lu-Yi Zou ◽  
Jing-Fu Guo ◽  
Ai-Min Ren ◽  
Dan Wang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Hybrid Materials ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Theoretical Investigations

Graphene-based (Gn) hybrids with porphyrin possess improved solubility and good nonlinear optical properties, especially excellent two-photon absorption (TPA) features.

Two-photon excitation microscopy in cellular biophysics

1995 ◽  
Vol 53 ◽  
pp. 62-63
Author(s):  
David W. Piston ◽  
Brian D. Bennett ◽  
Robert G. Summers
Keyword(s):  
Confocal Microscopy ◽  
Laser Beam ◽  
Duty Cycle ◽  
Excited Electronic State ◽  
Input Power ◽  
Two Photon ◽  
Simultaneous Absorption ◽  
Photon Excitation ◽  
Very High ◽  
Two Photon Excitation

Two-photon excitation microscopy (TPEM) provides attractive advantages over confocal microscopy for three-dimensionally resolved fluorescence imaging and photochemistry. 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 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 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.

Second order interference in two photon absorption

1996 ◽  
Vol 43 (9) ◽  
pp. 1765-1771 ◽  
Author(s):  
M. W. HAMILTON and D. S. ELLIOTT
Keyword(s):  
Second Order ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon
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