Patent ID: 11906812
Assignee: UNIVERSITY OF ROCHESTER
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A method of actively cooling an optic device comprising a substrate with a front configured to reflect or diffract visible or near-IR illuminating light and a back, comprising:
forming a pattern of chambers in said substrate recessed from but adjacent said front;
forming coolant inlet and outlet passages extending from said back surface to said chambers, wherein at least one of said inlet passages and at least one of said outlet passages extend to each of said chambers;
flowing coolant to said chambers through said inlet passages and exhausting coolant from said chambers through said outlet passages to maintain said front surface at a temperature range maintaining said front in surface shape with deformations not to exceed one-tenth of the illuminating optical wavelength at absorbed power density greater than 100 mW/cm2.