Systems and methods for measuring high-intensity light beams

摘要

Systems and methods for measuring an intensity characteristic of a light beam are disclosed. The methods include directing the light beam into a prism assembly that includes a thin prism sandwiched by two transparent plates, and reflecting a portion of the light beam by total-internal-reflection surface to an integrating sphere while transmitting the remaining portion of the light beam through the two transparent plates to a beam dump. The method also includes detecting light captured by the integrating sphere and determining the intensity characteristic from the detected light.

主权项

1. A method of measuring an intensity characteristic of a light beam, comprising:
directing the light beam into a prism assembly that includes a thin prism sandwiched by two transparent plates, wherein the thin prism has a width d and a total-internal-reflecting (TIR) surface having an area; reflecting a portion of the light beam by the TIR surface to an integrating sphere while transmitting the remaining portion of the light beam through the two transparent plates to a beam dump; detecting a portion of the light captured by the integrating sphere; and determining an intensity characteristic of the light beam from the detected light.