Formation of colored stero pattern inside color-less transparent glass
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
- Publication Date
- 2002-12-11
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
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...