Topic
Ring laser gyroscope
About: Ring laser gyroscope is a research topic. Over the lifetime, 2070 publications have been published within this topic receiving 18609 citations. The topic is also known as: Sagnac interferometer.
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Patent•
16 Dec 1986
4 citations
Patent•
29 Sep 1994TL;DR: In this article, a magnetic device attached to a ring laser gyro is used to prevent undesirable operating conditions in a ring-laser gyro by creating a magnetic field that suppresses the operation at those specific wavelengths.
Abstract: A magnetic device attached to a ring laser gyro is used to prevent undesirable operating conditions in a ring laser gyro. Undesirable operating conditions occur when the ring laser gyro operates at specific wavelengths. The magnetic device used with the ring laser gyro creates a magnetic field that suppresses the operation at those specific wavelengths so that the undesirable operating conditions are removed.
4 citations
24 Sep 2007
TL;DR: The experiments show that this acquisition card counts numbers real-timely and exactly, and can achieve the counting effect of primary acquisition card completely; taking PC/104 system simplifies the devices at a large extend so that it also improves its simplification for using and flexibility for collocation.
Abstract: For the limitation of the primary data acquisition card of laser gyroscope SINS, based on the further analysis of the features of output signals of laser gyroscope and accelerator, this paper has finished the design of data acquisition card according to FPGA, which is described by VHDL. This design of data acquisition card is faced to PC/104 system. The experiments show that this acquisition card counts numbers real-timely and exactly, and can achieve the counting effect of primary acquisition card completely; taking PC/104 system simplifies the devices at a large extend so that it also improves its simplification for using and flexibility for collocation.
4 citations
13 Feb 1990
TL;DR: Zarinetchi et al. as mentioned in this paper presented the first fiberoptic ring laser gyroscope using stimulated Brillouin scattering as the laser gain medium, which has always been a bulk-optic device.
Abstract: F. Zarinetchi, S.P. Smith, and S. EzekielResearch Laboratory of ElectronicsMassachusetts Institute of TechnologyCambridge, MA 02139Fiberoptic inertial rotation sensors (or gyroscopes) so far are based on the Sagnac effect in eithera multiturn interferometers or a resonator2. Both these approaches constitute the fiberopticimplementation of previously demonstrated Sagnac interferometer3 gyroscopes and resonator4gyroscopes employing bulkoptic components. However, there has not yet been a fiberoptic analog ofthe ring laser gyroscope5'6, which has always been a bulk -optic device. In this paper, we presentpreliminary data on a fiberoptic ring laser gyroscope using stimulated Brillouin7 scattering as the lasergain medium. To our knowledge, this is the first demonstration of a solid state ring laser gyroscope orRLG.Figure 1 shows a simplified diagram of a stimulated Brillouin fiberoptic gyroscope. A singlefrequency laser, He -Ne at 1.15 pm, is coupled into opposite directions of a non -polarization maintainingfiberoptic ring resonator (length 25 m; finesse - 250; coil diameter 7.5 cm) and acts as the pump forthe stimulated Brillouin laser. The frequency of the Brillouin laser$ -11 is downshifted from that of thepump by the acoustic frequency in the fiber which is about 15 GHz at 1.15 pm. The direction of theBrillouin laser is opposite to that of the pump because that is the direction that experiences the highestBrillouin gain. The clockwise pump in the resonator is denoted by P- and the counterclockwise pumpby P. The corresponding stimulated Brillouin lasers that are created by the pumps are denoted by B-
4 citations
Patent•
18 Dec 2013
TL;DR: In this paper, a semi automatic light combination function of the light-combined prism and the photoelectric tube on a laser gyroscope is achieved through cooperation of software and hardware.
Abstract: The invention relates to a mechanical dithering laser gyroscope light adjusting system. The mechanical dithering laser gyroscope light-combined adjusting system is composed of a light-combined prism, a photoelectric tube assembling mechanism, a controlling mechanism of the photoelectric tube assembling mechanism, an image collecting system and a data collecting system. The light-combined prism, the photoelectric tube assembling mechanism and the controlling system of the photoelectric tube assembling mechanism are used for adjusting the position of the light-combined prism and the photoelectric tube on a resonant cavity, and the light-combined prism and the photoelectric tube are controlled to be at the best positions. The image collecting system is used for collecting two beams of optical signals output by the gyroscope resonant cavity, optical signals are converted into the electric signals through the data collecting system, and information is sent to a main control computer. Semi automatic light combination function of the light-combined prism and the photoelectric tube on a laser gyroscope is achieved through cooperation of software and hardware. The mechanical dithering laser gyroscope light adjusting system can accurately and efficiently install the light-combined prism and the photoelectric tube, operation is stable and accurate, and the threshold value parameters of signal waveforms can be accurately judged and computed.
4 citations