公开(公告)号：US11489313B2

公开(公告)日：2022-11-01

申请号：US16731742

申请日：2019-12-31

Applicant: Nokia Technologies Oy

Inventor： Brian Stern

IPC: H01S5/062 ,  H01S5/10 ,  H01S5/0687 ,  H01S5/0625

Abstract: An apparatus includes a wavelength-tunable laser and an electronic controller. The electronic controller is configured to control the wavelength-tunable laser such that an output wavelength of the wavelength-tunable laser performs a zigzag in time. The wavelength-tunable laser is capable of rapidly and densely scanning wavelengths across a broad spectral range.

公开(公告)号：US20210091534A1

公开(公告)日：2021-03-25

申请号：US17009878

申请日：2020-09-02

Applicant: Nokia Technologies Oy

Inventor： David Bitauld ,  Brian Stern

IPC: H01S5/042 ,  H01S5/06 ,  H01S5/10 ,  G01N29/24

Abstract: A photoacoustic apparatus including circuitry configured to generate a frequency comb of light including a plurality of wavelengths; circuitry configured to modulate the light of the frequency comb at a modulation frequency; circuitry configured to change at least a subset of the plurality of wavelengths of the frequency comb of light; and at least one acoustic sensor configured to detect sound produced by analyte illuminated by the frequency comb of light.