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A frequency-swept laser and its implementation method

A realization method and laser technology, applied in the field of optics, can solve the problem of high cost, achieve the effect of reducing the overall cost and simplifying the body structure

Active Publication Date: 2021-02-23
TOWARDPI (BEIJING) MEDICAL TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the inventor has found through research that the cost of the FDML fiber laser in the prior art is too high

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  • A frequency-swept laser and its implementation method
  • A frequency-swept laser and its implementation method
  • A frequency-swept laser and its implementation method

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Embodiment Construction

[0030] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Unless expressly stated otherwise, throughout the specification and claims, the term "co...

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Abstract

The invention relates to a sweep frequency laser and an implementation method thereof. The sweep frequency laser comprises a semi-transparent semi-reflective film and an optical amplification loop, and the optical amplification loop comprises a gain chip, a collimating lens, a scanning device and a wavelength selective reflector; an initial laser beam with a preset wavelength is transmitted to thecollimating lens after being gained by the gain chip; the laser beam corrected by the collimating lens is refracted by the scanning device and transmitted to the wavelength selective reflector; the wavelength selective reflector reflects the laser beam with a preset wavelength to the scanning device, and then the laser beam is refracted by the scanning device and transmitted to the semi-transparent semi-reflective film through the collimating lens so as to complete primary light amplification. The semi-transparent semi-reflective film realizes multiple times of light amplification by reflecting a part of received laser beams back to a gain chip of the light amplification loop for multiple times; and the semi-transparent semi-reflective film is also used for outputting the laser beam amplified for multiple times.

Description

technical field [0001] The invention belongs to the field of optics, in particular to a frequency-sweeping laser and a realization method thereof. Background technique [0002] Optical coherence tomography (OCT), as a high-resolution, non-destructive, non-invasive optical three-dimensional imaging technology, can not only meet the needs of medical fields such as ophthalmology, gastroenterology, and cardiology to image the three-dimensional structure of biological tissues. requirements, and can meet the detection requirements of industrial fields such as lens spacing, printed circuit boards, drug coatings, semiconductor wafers, and optical film thickness. [0003] As the light source of OCT, the Fourier domain mode-lock (FDML) fiber laser in the prior art has the advantages of fast wavelength scanning speed, narrow instantaneous spectral linewidth and high output power. [0004] However, the inventor found through research that the cost of the FDML fiber laser in the prior a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/10H01S3/11
CPCH01S3/10023H01S3/1106
Inventor 邢燕飞汪霄
Owner TOWARDPI (BEIJING) MEDICAL TECH LTD