Method for limiting growth of KDP-type crystals with a long seed
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United States of America Patent
Stats
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Nov 3, 2020
Grant Date -
May 9, 2019
app pub date -
Dec 12, 2018
filing date -
Oct 21, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Method for limiting growth of KDP-type crystals with a long seed where an upper and a lower ends of the long seed crystal are respectively limited by an upper baffle plate and a lower tray to restrain growth of a pyramidal surface and allow only four prismatic surfaces in [100] and [010] directions to grow. Finally grown crystal contains no pyramid-prism interface that severely restricts quality of optical element, and all cut optical elements have high optical quality. As four prismatic surfaces are subjected to highly similar growing environment and grow simultaneously, all optical elements cut therefrom have high optical uniformity. Due to uniqueness of a cutting angle of a KDP crystal frequency-tripled element, high cutting efficiency is achieved in the element, and an area of a maximum frequency-tripled element that may be cut is known in advance according to a horizontal size of the grown crystal.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| CN | B | CN107805844 | Oct 21, 2017 |
International Classification(s)
- 2018 Application Filing Year
- C30B Class
- 528 Applications Filed
- 358 Patents Issued To-Date
- 67.81 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C30B Class
- 0 % this patent is cited more than
- 5 Age
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