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Cavity enhanced optical pumping of solid state ring laser gyroscope

A ring laser gyroscope and pumping technology, applied in Sagnac effect gyroscopes, gyroscopes/steering sensing devices, lasers, etc., can solve the problems of limited service life and expensive manufacturing.

Pending Publication Date: 2020-12-18
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although existing He-Ne gas discharge RLGs perform well in inertial navigation and other surveying areas, these He-Ne gas discharge RLGs may have a limited lifetime and be expensive to manufacture

Method used

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  • Cavity enhanced optical pumping of solid state ring laser gyroscope
  • Cavity enhanced optical pumping of solid state ring laser gyroscope
  • Cavity enhanced optical pumping of solid state ring laser gyroscope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 includes a ring laser gyroscope, which includes a light source, a plurality of main cavity reflectors and pump reflectors. The light source is configured to generate light at a first wavelength. A plurality of main cavity mirrors are configured to route light of the second wavelength around the main cavity to a readout device. A primary cavity mirror of the plurality of primary cavity mirrors includes a gain medium. The pump mirror and a main cavity mirror including the gain medium are positioned and configured to reflect light at a first wavelength back and forth through the gain medium in the pump cavity, wherein light at the first wavelength excites the gain medium to produce light at a second wavelength , this second wavelength of light is reflected around the main cavity to the readout device.

Embodiment 2

[0031] Embodiment 2 includes the ring laser gyroscope of embodiment 1, wherein the pump cavity is located within the outline of the main cavity.

Embodiment 3

[0032] Embodiment 3 includes the ring laser gyroscope of any one of embodiments 1-2, wherein the gain medium comprises neodymium.

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PUM

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Abstract

The invention provides a cavity enhanced optical pumping of a solid state ring laser gyroscope. The ring laser gyroscope is provided. A light source is configured to generate light of a first wavelength. A plurality primary cavity mirrors are configured to route light of a second wavelength around a primary cavity to a readout device. One primary cavity mirror of the plurality of primary cavity mirrors includes a gain medium. The pumping mirror and the one primary cavity mirror including the gain medium is positioned and configured to reflect the light of the first wavelength back and forth ina pumping cavity through the gain medium, wherein the light of the first wavelength stimulates the gain medium to generate the light of the second wavelength that are reflected around the primary cavity to the readout device.

Description

Background technique [0001] Ring laser gyroscopes (RLGs) are used in the field of inertial navigation to measure angular motion or rotation. Traditionally, RLGs utilize a low-pressure helium-neon gas discharge as the active gain medium. Although existing He-Ne gas-discharge RLGs perform well in inertial navigation and other measurement domains, these He-Ne gas-discharge RLGs may have a limited lifetime and be expensive to manufacture. [0002] RLGs that utilize solid-state gain media instead of helium-neon gas mixtures are currently seen as viable options. From a manufacturing perspective, solid-state gain medium RLGs can offer significant savings over He-Ne gas discharge RLGs in terms of labor and manufacturing costs. Moreover, such solid-state gain medium RLGs may offer technical advantages over He-Ne gas discharge RLGs in terms of increased lifetime. [0003] An example of a solid-state gain medium for cavity gain in a solid-state RLG is neodymium-doped silicon dioxide (...

Claims

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Application Information

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IPC IPC(8): G01C19/66
CPCG01C19/661H01S3/083H01S3/17H01S3/1611H01S3/094038H01S3/094084H01S3/0604H01S3/0621H01S3/0813H01S3/091H01S3/1603
Inventor 伯纳德·弗里茨艾伦·布鲁斯·塔弛贝里特里萨·马尔塔
Owner HONEYWELL INT INC