Patent ID: 8693856

Claim:
An apparatus for vacuum-compatible substrate thermal management, the apparatus comprising: a load-lock chamber coupled to a vacuum chamber, the load-lock chamber being configured to hold a substrate prior to the substrate being transferred into the vacuum chamber; a substrate stage configured to hold the substrate in the vacuum chamber; a metal base of the substrate stage; a light-emitting diode array arranged beneath a holding position of the substrate in the load-lock chamber such that a bottom side of the substrate is heated radiatively by the light-emitting diode array; a transparent window above the light-emitting diode array; a window retention ring securing the transparent window to the metal base; a plurality of posts attached to a top side of the transparent window, wherein the substrate is placed on top of the plurality of posts in the load-lock chamber; and a plurality of measurement sensors arranged at the top of the posts upon which the substrate rests for monitoring a temperature of the substrate.