dong jun, xu qiao, cai bang-wei, et al. Effect of temperature on measuring system of long focal length[J]. High Power Laser and Particle Beams, 2005, 17.
Citation:
dong jun, xu qiao, cai bang-wei, et al. Effect of temperature on measuring system of long focal length[J]. High Power Laser and Particle Beams, 2005, 17.
dong jun, xu qiao, cai bang-wei, et al. Effect of temperature on measuring system of long focal length[J]. High Power Laser and Particle Beams, 2005, 17.
Citation:
dong jun, xu qiao, cai bang-wei, et al. Effect of temperature on measuring system of long focal length[J]. High Power Laser and Particle Beams, 2005, 17.
On the basis of Talbot effect of Ronchi grating, the influence of temperature on the stability of the measuring system of long focal length has been theoretically analyzed. It has been testified by experiment that the fluctuation of refractive index of atmosphere resulted from the interior and exterior temperature of the system influences the measuring precision. After taking some methods such as reducing the surface-temperature of He-Ne laser in the measuring system by water-circulation, removing the cold and heat source of the exterior, putting the couple-grating into heat insulation, the repeatability precision of the measuring system increases by 5 to 8 times. Standard error of 0.1‰ is achieved, and data fluctuation of repetitive measurement is within 5mm.
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