Process for making low-OH glass articles and low-OH optical resonator
First Claim
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1. A process for making a consolidated glass article having a low β
- -OH level at least in the near-surface region, comprising at least one chlorine treatment step of subjecting the consolidated glass of the article to a chlorine-containing atmosphere at an elevated temperature for an effective amount of time.
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Abstract
Disclosed are optical resonators having low OH content in at least the near-surface region and a process for making low OH glass article by chlorine treatment of consolidated glass of the article. Cl2 gas was used to remove OH from depth as deep as 350 μm from the surface of the consolidated glass. The process can be used for treating flame-polished preformed optical resonator disks. A new process involving hot pressing or thermal reflowing for making planar optical resonator disks without the use of flame polishing is also disclosed.
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Citations
25 Claims
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1. A process for making a consolidated glass article having a low β
- -OH level at least in the near-surface region, comprising at least one chlorine treatment step of subjecting the consolidated glass of the article to a chlorine-containing atmosphere at an elevated temperature for an effective amount of time.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- 19. A glass optical resonator for use in an opto-electronic oscillator having a low OH content at least in the near-surface region.
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