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Title: Process of making cryogenically cooled high thermal performance crystal optics

Patent ·
OSTI ID:7206917

A method is disclosed for constructing a cooled optic wherein one or more cavities are milled, drilled or formed using casting or ultrasound laser machining techniques in a single crystal base and filled with porous material having high thermal conductivity at cryogenic temperatures. A non-machined strain-free single crystal can be bonded to the base to produce superior optics. During operation of the cooled optic, N[sub 2] is pumped through the porous material at a sub-cooled cryogenic inlet temperature and with sufficient system pressure to prevent the fluid bulk temperature from reaching saturation. 7 figs.

DOE Contract Number:
W-31109-ENG-38
Assignee:
Dept. of Energy, Washington, DC (United States)
Patent Number(s):
US 5123982; A
Application Number:
PPN: US 7-547753
OSTI ID:
7206917
Resource Relation:
Patent File Date: 29 Jun 1990
Country of Publication:
United States
Language:
English