08-02-2018 дата публикации
Номер: US20180038891A1
Принадлежит:
The invention relates to a device for conducting near-field optical measurements of a sample comprising a wavelength-tunable monochromatic light source. Further the invention relates to methods for measuring the near-field using such a device. 112. Device for the near-field optical measurement of a sample comprising a probe () , a wavelength-tunable monochromatic light source () with tuning mechanism for changing the wavelength λ provided by the light source ,{'b': 2', '3', '4', '5, 'an interferometer integrated in the optical path of the light source (), comprising a beam splitter () splitting the light of the light source into two optical light paths, the reference light path () and the signal light path (),'}{'b': '4', 'wherein the reference light path () does not contain the probe, and'}{'b': 5', '1', '4', '5', '6, 'the signal light path () comprises the probe (), and the reference and the signal light paths (,) are superimposed at the detector (), characterized in that'}{'b': 4', '5, 'the difference of the lengths of the two optical paths () and () can be adjusted to be at most 1000 μm.'}2474365136. Device according to claim 1 , wherein in the interferometer the reference light path () comprises a reference mirror () directing the reference light path () via the beam splitter () to the detector () claim 1 , and the signal light path () is reflected at the probe () and directed via the beam splitter () to the detector () claim 1 , or{'b': 4', '8', '5', '1', '8', '6, 'wherein in the interferometer the reference light path () is directed by a second beam splitter () to the detector and the signal light path () is reflected at the probe () and directed via the second beam splitter () to the detector ().'}345. Device according to claim 1 , wherein the difference of the lengths of the two optical paths () and () can be adjusted to be at most 100 μm.445. Device according to claim 1 , wherein the difference of the lengths of the two optical paths () and () can be ...
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