Showing papers on "Atom interferometer published in 1988"
Patent•
12 Feb 1988
TL;DR: In this paper, a laser interferometer for interferometric linear measurement is described, where the output signal of the reference signal detector (22) is used to effet in the event of changes in the refraction index of the medium occupying the reference section and the measuring section.
Abstract: In a laser interferometer for interferometric linear measurement, a semiconductor laser (1) energizes a measuring interferometer (7) with which there is coordinated a spatially directly adjacent reference interferometer (9). The output signal of the reference signal detector (22) of the reference interferometer (9) is used to effet in the event of changes in the refraction index of the medium occupying the reference section and the measuring section a frequency tuning of the semiconductor laser (1) in such a way that the wavelength acting as a length normal will be kept constant in the reference interferometer (9) and the measuring interferometer (7).
17 citations
TL;DR: A novel type of ring interferometer is proposed which is used as a reference for frequency stabilization of semiconductor lasers by precisely polishing a block of synthesized quartz into the shape of an equilateral prism with multilayer dielectric films on each side.
Abstract: A novel type of ring interferometer is proposed which is used as a reference for frequency stabilization of semiconductor lasers. This interferometer is fabricated by precisely polishing a block of synthesized quartz into the shape of an equilateral prism with multilayer dielectric films on each side. This interferometer has the advantage of drastic reduction of optical feedback to semiconductor lasers. The alignment of the optical axis of the interferometer is relatively easy compared with a conventional ring interferometer. The frequency fluctuation of an AlGaAs semiconductor laser is reduced to <1 MHz using this interferometer.
4 citations
TL;DR: In this paper, the present status of the laser interferometer gravitational antenna is described based on the construction of an ISAS 9.7m 102 bounce antenna and the future prospect of constructing a kilometer class antenna is also discussed together with its construction in space including the lunarsurface.
Abstract: The present status of the laser interferometer gravitational antenna is described based on the construction of an ISAS 9.7m 102 bounce antenna. The future prospect of constructing a kilometer class antenna is also discussed together with its construction in space including the lunarsurface.
1 citations