公开(公告)号：US20190323891A1

公开(公告)日：2019-10-24

申请号：US16313668

申请日：2017-06-23

Applicant: FORSCHUNGSVERBUND BERLIN E.V.

Inventor： Bernd SUMPF ,  Martin MAIWALD

IPC: G01J3/44 ,  G01N21/65 ,  G01J3/10

Abstract: Raman spectroscopy methods and devices are disclosed.The method includes irradiation of excitation radiation onto a sample to be examined. The sample is irradiated with a first excitation radiation of a first excitation wavelength and a different second excitation radiation of a second excitation wavelength. The first excitation radiation scattered by the sample is wavelength-selective filtered by means of a passive filter element. A transmitted filter wavelength of the filter element differs from at least the first excitation wavelength and the second excitation wavelength. A first intensity is determined through a single-channel detector assigned to the filter wavelength from the first excitation radiation scattered and filtered by the sample. Additionally, the filter element wavelength-selective filters the second excitation radiation scattered by the sample. A second intensity is determined through the single-channel detector assigned to the filter wavelength from the second excitation radiation scattered and filtered by the sample.

公开(公告)号：US20190273359A1

公开(公告)日：2019-09-05

申请号：US16327419

申请日：2017-08-21

Applicant: FORSCHUNGSVERBUND BERLIN E.V.

Inventor： Götz ERBERT ,  Jörg FRICKE ,  Andre MÜLLER ,  Hans WENZEL ,  Bernd SUMPF ,  Katrin PASCHKE

IPC: H01S5/10 ,  H01S5/125 ,  G02B6/122 ,  G02B6/124

Abstract: The inventive waveguide structure comprises a first waveguide region having a constant first width adapted to guide electromagnetic waves mode sustainably along its longitudinal axis; a second waveguide region adapted to guide electromagnetic waves mode sustainably along its longitudinal axis, wherein the longitudinal axis of the first waveguide region and the longitudinal axis of the second waveguide region form a common longitudinal axis of the waveguide structure, wherein a first end face of the first waveguide region and a first end face of the second waveguide region are aligned with each other, the width of the first end face of the second waveguide region corresponding to the first width, and the width of the second waveguide region along its longitudinal axis widens from the first end face to a second end face to a second width greater than the first width.