Unlock instant, AI-driven research and patent intelligence for your innovation.

Precision Positioning System Using Wavelength Tunable Lasers

A technology for tuning lasers and acquisition systems, which is applied to devices that control laser output parameters, adopts optical devices, and utilizes wave/particle radiation, etc., and can solve problems such as measurement accuracy limitations

Active Publication Date: 2020-10-23
ZYGO CORPORATION
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in real industrial applications, measurement accuracy is often limited due to other effects such as environmental or electronic noise or the measurement / processing technique employed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Precision Positioning System Using Wavelength Tunable Lasers
  • Precision Positioning System Using Wavelength Tunable Lasers
  • Precision Positioning System Using Wavelength Tunable Lasers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The methods and systems disclosed herein allow for industrial ultra-high precision DMI applications using scanning sources. The scanning source is a tunable laser with a bandwidth over which high-speed scanning is possible. High-speed sweeps can be smooth continuous changes in wavelength, or include a range of different discrete frequencies within a bandwidth.

[0029] A typical SS-OCT analysis involves transforming the interference signal acquired during the scan using Fourier and / or Hilbert transform techniques to generate a composite reflectance spectrum. The frequency axis of the spectrum represents the demodulation depth. This approach can be convenient when the cavity is a scattering volume (such as a biological sample), since each scan then provides the composite reflectance as a function of depth, thereby delineating the boundaries of the biofeature. Interferometric signals are typically filtered to minimize error composition due to finite non-uniform sampling...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for determining a characteristic of a test cavity includes measuring, for each of a plurality of optical frequencies within the bandwidth of a tunable laser, an interference signal from the test cavity and a reference cavity having known characteristics. The method includes determining values ​​of a plurality of optical frequencies based on a measured interference signal from a reference cavity and known properties of the reference cavity, and using the determined values ​​of the plurality of optical frequencies to determine properties of the test cavity.

Description

[0001] This application claims the benefit of the priority date of U.S. Provisional Patent Application No. 62 / 347,141, filed June 8, 2016, under Section 119 of the United States Patent Act (35 USC § 119) and entitled "Use of Wavelengths Available A precise positioning system for tuning lasers". The entire content of this provisional patent application is incorporated herein by reference. Background technique [0002] The growing demand for optical coherence tomography (OCT) in the medical and industrial markets has driven unprecedented advances in high-speed, broadly tunable narrow-linewidth semiconductor lasers. These new devices present unique enabling technologies for industrial distance measurement applications. [0003] Interferometry is a useful tool for distance measurements because the only fundamental limit to measurement accuracy is photon statistics. The LIGO interferometer is a good example of the precision that interferometry can achieve with care (and with a lo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01B9/02G01N21/17A61B5/00
CPCG01B9/02004G01B9/02091G01B9/0207G01B9/02021G01B9/02057G01B9/02069G01B9/02083G01B2290/60G01H9/006A61B5/0066G01N21/17G01B9/02G01B11/14H01S5/06
Inventor L.L.德克
Owner ZYGO CORPORATION