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Formation of colored stero pattern inside color-less transparent glass

A technology of transparent glass and glass, applied in the direction of imitating three-dimensional effect patterns, special patterns, patterns characterized by light projection effect, etc., can solve the problem of single pattern color and so on

Inactive Publication Date: 2002-12-11
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in this method, the color of the pattern is single, and even if the laser irradiation conditions are changed, only the grayscale of the colored dot area can be changed.

Method used

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  • Formation of colored stero pattern inside color-less transparent glass
  • Formation of colored stero pattern inside color-less transparent glass
  • Formation of colored stero pattern inside color-less transparent glass

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Example 1: Select the glass composition as 0.2% Au by weight % according to the above specific method 2 O, 0.5% CeO 2 , 80% SiO 2 , 9.3% CaO, 10% Na 2 O. Polished glass surface. Choose a laser beam with a laser pulse width of 100 fs and a wavelength of 800 nm, and a laser pulse frequency of 1 KHz. Use a three-dimensional mobile platform and computer software to control the laser irradiation and write two patterns, that is, first focus and irradiate the 300mW laser with a 50 times (NA=0.80) lens on the upper right corner of the glass and engrave it into the first pattern pattern. Then focus the laser with an average power of 300mW with a 10x (NA=0.30) objective lens and irradiate it onto the upper left corner of the polished glass to engrave the second pattern. In the lower left corner, use a 5x (NA=0.10) lens to focus and irradiate a 1mW laser to engrave the third pattern. All patterns are gray-black. After heat treatment at 600°C for 5 minutes, the first pat...

example 2

[0023] Example 2: According to the above specific method: select the glass composition, which is 0.3% Au by wt% 2 O, 0.1% Sb 2 o 3 , 55% SiO 2 , 6%Na 2 O, 8%K 2 O, 30%PbO, 0.6Al 2 o 3 . Polished glass surface. Choose to irradiate with neodymium-doped yttrium aluminum garnet (Nd:YAG) frequency-doubled laser with a wavelength of 532 nm, a pulse width of 10 nanoseconds (ns), and a repetition rate of 30 Hz. Use the three-dimensional mobile platform and computer software to control the laser beam to write the pattern. The average power of the laser is 450mw. The written pattern is colorless. After heat treatment at 350°C for 30 minutes, the pattern turns pink, and the absorption spectrum is as follows figure 2 shown. Wherein, the line a is the absorption spectrum of the area not irradiated by the nanosecond laser, and the line b is the absorption spectrum of the area irradiated by the nanosecond laser and heat-treated.

example 3

[0024] Example 3: According to the above specific method, select the glass composition, which is 2% Ag by weight 2 O, 0.1% SnO, 70% SiO 2 , 4.5% CaO, 5% BaO, 15% Na 2 O, 1.2% MgO, 1.2% ZnO, 1% Al 2 o 3Polished glass surface. Use a 20x (NA=0.46) objective lens to focus and irradiate the femtosecond laser with a wavelength of 800nm ​​(pulse width 200fs, pulse frequency 200KHz, average power 100mW) into the glass, and engrave a butterfly pattern inside the glass. The pattern is grey. It was then heat-treated at 500°C for 10 minutes. Gray butterflies turn yellowish. Observation under the transmission electron microscope showed that nano-silver particles were precipitated. The yellowish color is due to the surface plasmon absorption of the Ag nanoparticles. Then carve the beetle pattern in another position in the sample. Under 254nm ultraviolet irradiation, the part not irradiated by the laser (such as image 3 Shown in a) observed that originating from Ag + 360nm lumi...

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Abstract

The present invention is method of forming colored stereo pattern inside color-less transparent glass. Laser beam with femtosecond to nanosecond pulse width and focal spot powder density greater than1 MW / sq cm is focused into Ag, Au and Cu ion doped glass with polished surface. The glass after being laser irradiated is heat treated, so that nanometer metal grains are separated from the laser irradiation area and different colors may be produced. When irradiated with ultraviolet light, the glass may glow with various color lights depending on the previous laser irradiation and heat treatment,Capable of forming colored stereo pattern, the present invention may be used in ultrahigh density 3D light memory and 3D photon crystal.

Description

Technical field: [0001] The invention relates to a method for forming a multi-color three-dimensional pattern inside a colorless transparent glass, in particular to the use of nanosecond (10×10 -9 seconds) to femtoseconds (100×10 -15 Second) pulsed laser acts on a colorless transparent glass inside to form a new technology of multi-color three-dimensional pattern. Background technique: [0002] In the prior art (application number: 00127613.1), it is mentioned that when a beam of laser light with a wavelength in the non-absorbing region of the glass and a pulse width shorter than 10 ps acts on the inside of the glass, and the focused energy density is greater than the corresponding multiphoton reaction threshold, but lower than When the damage threshold of the glass is exceeded, the coloring caused by the formation of color centers or changes in ion valence may occur near the laser focus point in the glass. Due to the spatial selectivity of the formation of such colored mi...

Claims

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Application Information

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IPC IPC(8): B44C5/08B44F1/08B44F7/00
Inventor 邱建荣姜雄伟朱从善
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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