Three-Dimensional Optical Memory Using Glasses as a Recording Medium through a Multi-Photon Absorption Process

1998 ◽  
Vol 37 (Part 1, No. 4B) ◽  
pp. 2263-2266 ◽  
Author(s):  
Jianrong Qiu ◽  
Kiyotaka Miura ◽  
Kazuyuki Hirao
Keyword(s):  
Three Dimensional ◽  
Optical Memory ◽  
Photon Absorption ◽  
Absorption Process ◽  
Recording Medium

Three-Dimensional Optical Memory in a Photoacid-Induced Recording Medium

2005 ◽  
Vol 44 (9A) ◽  
pp. 6593-6595 ◽  
Author(s):  
Takeshi Mizuno ◽  
Kazuhiko Yamasaki ◽  
Hiroaki Misawa
Keyword(s):  
Three Dimensional ◽  
Optical Memory ◽  
Recording Medium

scholarly journals Three-dimensional erasable optical memory using a photochromic diarylethene single crystal as the recording medium

2001 ◽  
Vol 77 (2) ◽  
pp. 30-35 ◽  
Author(s):  
Tuyoshi FUKAMINATO ◽  
Seiya KOBATAKE ◽  
Tsuyoshi KAWAI ◽  
Masahiro IRIE
Keyword(s):  
Single Crystal ◽  
Three Dimensional ◽  
Optical Memory ◽  
Recording Medium

Two-Photon Excitation Imaging of Glucose Metabolism in Living Tissue

1997 ◽  
Vol 3 (S2) ◽  
pp. 305-306
Author(s):  
David W. Piston
Keyword(s):  
Confocal Microscopy ◽  
Collection Efficiency ◽  
Three Dimensional ◽  
Spatial Filter ◽  
Input Power ◽  
Photon Absorption ◽  
Focal Volume ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Two-photon excitation microscopy (TPEM) provides attractive advantages over confocal microscopy for three-dimensionally resolved fluorescence imaging and photochemistry. It provides three-dimensional resolution and eliminates background equivalent to an ideal confocal microscope without requiring a confocal spatial filter, whose absence enhances fluorescence collection efficiency. This results in inherent submicron optical sectioning by excitation alone. In practice, TPEM 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 limits the average input power to less than 10 mW, only slightly greater than the power normally used in confocal microscopy. Because of the intensity-squared dependence of the two-photon absorption, the excitation is limited to the focal volume.

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