公开(公告)号：US20150271905A1

公开(公告)日：2015-09-24

申请号：US14660849

申请日：2015-03-17

Applicant: KLA-Tencor Corporation

Inventor： Sebaek Oh ,  Anant Chimmalgi ,  Rahul Yadav ,  Matthew Derstine ,  Ilya Bezel

IPC: H05G2/00 ,  H01J65/00

CPC classification number: H01J65/00 ,  H01J61/025 ,  H01J61/32 ,  H01J65/04

Abstract: A laser-sustained plasma light source includes a plasma cell configured to contain a volume of gas. The plasma cell is configured to receive illumination from a pump laser in order to generate plasma within the volume of gas. The plasma emits broadband radiation. The plasma cell includes one or more transparent portions being at least partially transparent to at least a portion of illumination from the pump laser and at least a portion of the broadband radiation emitted by the plasma. The plasma cell also includes one or more nanostructured layers disposed on one or more surfaces of the one or more transparent portions of the plasma cell. The one or more nanostructure layers form a region of refractive index control across an interface between the one or more transparent portions of the plasma cell and an atmosphere.

Abstract translation: 激光维持等离子体光源包括被配置为容纳一定体积的气体的等离子体单元。 等离子体单元被配置为从泵浦激光器接收照明，以在气体体积内产生等离子体。 等离子体发射宽带辐射。 等离子体单元包括对来自泵浦激光器的至少一部分照明和由等离子体发射的宽带辐射的至少一部分至少部分透明的一个或多个透明部分。 等离子体单元还包括设置在等离子体单元的一个或多个透明部分的一个或多个表面上的一个或多个纳米结构层。 一个或多个纳米结构层在等离子体电池的一个或多个透明部分和气氛之间的界面上形成折射率控制的区域。