公开(公告)号：US20210124092A1

公开(公告)日：2021-04-29

申请号：US16464376

申请日：2017-12-12

Applicant: ELEMENT SIX TECHNOLOGIES LIMITED

Inventor： ALEXANDER CLARK MUHR

IPC: G02B1/118 ,  G02B1/02 ,  H01S3/00 ,  C30B29/04

Abstract: An optical element comprising a window formed of synthetic diamond material and an optical surface pattern formed directly in a surface of the synthetic diamond material. The window of synthetic diamond material is in the form of a wedged diamond window with non-parallel major surfaces defining a wedge angle in a range (1) arcminute to 10° and the optical surface pattern is formed directly in one or both of the non-parallel major surfaces. There is also described a laser system comprising the optical element and a laser having a coherence length, wherein the coherence length of the laser is greater than twice a thickness of the wedged diamond window at its thickest point.