Abstract:
An apparatus comprises a coherent source (103) radiating coherent light to a sample, an excitation source (101) radiating excitation light to the sample, a scanning unit (102) controlling at least the radiated location and/or radiated shape of the excitation light on the sample, a signal separation unit (106) dividing a mixed signal from the sample into a coherent signal and spectroscopic signal, at least one detector (109,112) measuring the spectroscopic signal and coherent signal, at least one processing unit (110, 113) converting the spectroscopic signal into spectroscopic data and converting the coherent signal into a coherent image, and a feedback unit (118) controlling the scanning unit (102) based on the coherent image.