Set for contactless temperature control, a method of generating electromagnetic radiation wavefronts and the use of the set to generate profiles of temperature fields

A set for controlling the temperature of a target, the set comprising:

• a source of radiation configured to output radiation towards the target to heat the target;
• a thermal radiation detector configured to detect thermal radiation emitted from the target;
• a controller connected to the source of radiation and to the thermal radiation detector, so that the source of radiation, the thermal radiation detector and the controller are arranged in a feedback loop, wherein the controller is configured to operate the source of radiation in accordance with thermal radiation detected by the thermal radiation detector;
• and
• a wavefront modifier configured to modify a profile of a wavefront of the radiation output by the source of radiation.