Broadband pulsed light source apparatus and spectroscopic measurement method
AssigneeUshio Denki Kabushiki Kaisha
InventorsJunki SAHARA, Aya OTA
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Abstract
A nonlinear element provides a nonlinear effect to light output from a pulsed laser source. Remaining light component having the oscillation wavelength of the pulsed laser source is attenuated when the light is split by a dichroic mirror. The divided light is subjected to pulse stretching by a fiber, and is combined by a multiplexing element. The light thus combined is irradiated to a target object S. The light transmitted through the target object S is received by a photoreceiver. The output signal of the photoreceiver is converted by a calculation unit into a spectrum.
Claims23
A broadband pulsed light source apparatus comprising:
- a pulsed laser source;
- a nonlinear element structured to provide a nonlinear effect to light output from the pulsed laser source, so as to output supercontinuum light;
- and
- an attenuation unit structured to attenuate light component having an oscillation wavelength of the pulsed laser source contained in the supercontinuum light output from the nonlinear element.
The broadband pulsed light source apparatus according to 9, wherein the oscillation wavelength of the pulsed laser source is within a boundary wavelength region of output-side waveguides of the arrayed waveguide grating.
Dependencies are inferred from the claim text.