Patent ID: 9476766
Filing Date: 2016-10-25
CPC Classification: G01J,G01N,G02B

Claim Text:
1. A method for examining a sample comprising: generating excitation light in pulses which occur in succession at an excitation pulse frequency; illuminating a sample region with the excitation light; detecting detection light emanating from the sample region using a detector which for each detected photon of the detection light, generates an electrical pulse and thereby a sequence of electrical pulses; and generating a digital data sequence by sampling the sequence of electrical pulses using an analog-digital converter at a sampling rate, wherein the excitation light is split off from a primary light, and a portion of the primary light that differs from the excitation light is detected by an excitation detector which generates a further electrical pulse for each detected pulse of the different portion of primary light and thereby a sequence of further electrical pulses, and wherein the electrical pulses and the further electrical pulses are superposed with opposite sign by a superposition device being a power combiner to provide a superposition signal which is sampled by the analog-digital converter to generate the digital data sequence, or the electrical pulses and the further electrical pulses are superposed with opposite sign by the power combiner to provide the superposition signal which is sample by the analog-digital converter to generate the digital data sequence.