1. Interferometer

2. Passive interferometer equipment;

3. Compact linnik interferometer

4. Far-IR Interferometer.

5. "Michelson Interferometer Operation".

6. Short-coherence interferometer

7. Passive interferometer equipment.

8. c. Passive interferometer equipment.

9. c. passive interferometer equipment.

10. Polarimeter employing a fizeau interferometer

11. Interferometer and fourier-transform spectroscopic analyzer

12. Direction finding interferometer internal calibration system

13. An adjustable interferometer includes an optical input head to couple the interferometer to a light source.

14. Sagnac interferometer and reflective modulator comprising same

15. Interferometric measurement process and laser interferometer therefor

16. Shape measuring device using frequency scanning interferometer

17. Polarization diversity optical interferometer and microscope using same

18. Occasional calibration phase-difference modulation for sagnac interferometer

19. Fiber optic acoustic sensor array based on sagnac interferometer

20. a detector: a differential refractometer or an interferometer refractometer

21. Dense wavelength division multiplexer utilizing an asymmetric pass band interferometer

22. Interferometer for tsv measurement and measurement method using same

23. Modulation interferometer and fiberoptically divided measuring p robe with light guided

24. The CSO and JCMT were combined to form the first submillimeter interferometer.

25. An Arrayed waveguide grating (AWG) is a generalization of the Mach-Zehnder interferometer

26. The twin Keck Telescopes on Mauna Kea regularly team up as an interferometer.

27. The interferometer (12) has a semiconductor optical amplifier (38) coupled in each arm.

28. The combination of the polarization control and the active phase stabilization of the interferometer at Bob's end allows for the stable operation of the interferometer when used as part of a one-way QKD system.

29. Interestingly, an advanced laser interferometer gravitational-wave detector may provide the answer to this fundamental question.

30. A large number of acoustic sensors can be multiplexed into the architecture of the Sagnac interferometer.

31. An interferometer (150) which processes the phase modulated light and generates at least one output signal.

32. The interferometer has an optical path difference not equal to zero at each optically detected object element.

33. An optical gain module (OGM) in the form of an active Mach-Zehnder interferometer (MZI) is provided.

34. ALMA produces high-quality interferometer images at wavelengths in the range between infrared light and radio waves.

35. In the experiment, we anda six - photon interferometer to teleport an arbitrary polarization state of two photons.

36. The present invention provides means for correcting interferometer alignment errors through the use of corrective elements (412).

37. An interferometer optical element (30) is provided with a birefringent material (44) in the light path.

38. A magnetic interferometer (10) for performing nondestructive magnetic induction testing and inspection of wire rope and cable (12).

39. A piezo actuated Fabry-Perot interferometer operating in Mid IR was chosen to be used in future prototypes.

40. In an interferometer for measuring displacements of a movable structural component, comprising a measurement interferometer arrangement (1), a partial beam traverses a measurement branch of variable optical length and is guided by an adjustable reflector system (11) connected to the movable structural component.

41. Height scanning interferometer for determining the absolute position and surface profile of an object with respect to a datum

42. 4) shows an exemplary measurement using the Zygo Verifire Asphere ™, a laser interferometer performing multi zonal measurements

43. Fibre-optic multiwavelength interferometer (mwli) for the absolute measurement of distances and topologies for surfaces at a large operating distance

44. Interferometer serve for measuring of length, refractive indices, angles and spectroscopy to check interferences (overlapping light waves) for precison measurements.

45. Fizeau used a special interferometer arrangement to measure the effect of movement of a medium upon the speed of light.

46. The low sensitivity inherent in the double-exposure grating interferometer makes it useful for measuring the absolute phase variations of highly aberrant samples.

47. Such devices should be modified for an amplitude modulation or complex modulation of coherent light according to the principle of the Fabry-Perot interferometer.

48. In 1921 Albert A. Michelson made the first measurements of a stellar diameter using an interferometer on the Hooker telescope at Mount Wilson Observatory.

49. The feedback system may include an interferometer system, a corneal polarimetry system, or other configurations for monitoring cross-linking activity within the cornea.

50. An analyzer (9), fitted to the output of the interferometer, transmits an adjustable polarization state P¿det?, whereby an additional wavelength-dependent phase difference $g(g)($g(l)) occurs between the partial waves of the spectral components. $g(g)($g(l)) can be adjusted to obtain compensation of dispersion or an increase in the spectral resolution of the interferometer.

51. A fiber optic acoustic sensor array is based upon a Sagnac interferometer rather than being based upon Mach-Zehnder interferometers as in known acoustic sensor arrays.

52. If required, the frequency modulated light (FM) may be converted into intensity modulated (IM) light by using an additional narrow band optical filter, e.g. Mach-Zehnder interferometer.

53. So after decades of development, construction and imagination and a breathtaking amount of hard work, they built their detector, called LIGO: The Laser Interferometer Gravitational-Wave Observatory.

54. There is a second Keck telescope under construction adjacent to the original, now called Keck I, and the two telescopes may be able to function as an optical interferometer.

55. The sensor systems measure a magnetic field using inorganic and/or organic magneto-optically active materials, e. g. polymer material and have an interferometer based on Faraday rotation.

56. The aim of invention is to enable the amplitudes of selected spectral lines in the output signal from a ring interferometer to be determined simply and with the greatest possible accuracy.

57. A polarimeter based on a modified Fizeau interferometer and a method for measuring the optical rotation of a polarized light beam by an optically active substance using the polarimeter, are provided.

58. That laser is actively stabilised in amplitude, frequency and position, in order to not inject additional noise in the interferometer, and hence to improve the sensitivity to the gravitational wave signal.

59. Preferably the photoacoustic cell comprises at least one cantilever microphone (13) and a compact Michelson interferometer (16) for measuring an acoustic signal produced by the at least one cantilever microphone (13).

60. A Birefringent interferometer system is described which uses nematic liquid crystal cells to produce variable optical path differences (OPD) between light of different polarization states that are interfered at a polarizing analyzer

61. Static measurement of optical output power versus the pressure on membrane reveals more than one period of Fabry-Perot interference, thereby generating a Fabry-Perot diaphragm-fiber interferometer device accurately reproducing audible acoustic wave.

62. The beamsplitter directs light reflected from the wafer surface (24) back into an interferometer camera to provide depth of focus and aberration information to a computer (16) which activates and selectively deforms the deformable mirror (6).

63. SWIFT ON GCOM-A1 Phase A activities are in progress at NASDA, ESA and CSA for the potential flight of the Stratospheric Wind Interferometer For Transport studies (SWIFT) instrument on board the NASDA GCOM-A1 satellite.

64. It is a matter of immense pride for all of us that 37 Indian scientists from nine Indian institutions participated in the international Laser Interferometer Gravitational Wave Observatory (LIGO) Collaboration and proved this theory correct three years ago.

65. The OCT device includes: a light source unit emitting a coherent light; an interferometer unit generating an interference pattern from a sample measured by receiving incident light emitted from the light source unit; the receiving unit receiving the interference pattern emitted from the interferometer unit and converting the interference pattern into an electrical signal; and a processing unit creating an image from data obtained by the receiving unit, wherein the processing unit can group the obtained data into a plurality of data sets and process the plurality of data sets in parallel.

66. * They noted with satisfaction that the charter for the Joint Oversight Group (JOG) for the Laser Interferometer Gravitational-Wave Observatory (LIGO) project in India has been signed and the final site for establishing the LIGO project in India identified.

67. In a preferred arrangement, the confocal focusing system associated with each transducer includes a pin-hole which is bridged by an acoustically transparent but optically reflective diaphragm, and acoustic reflectivity data is recovered by interrogating each diaphragm by means of an optical interferometer.

68. The invention relates to an assembly for installing a direction-finding antenna in a radome, preferably for retrofitting a direction-finding antenna in a radome, comprising: at least one antenna element, which is attached to the inside of an outer shell of the radome, wherein the direction-finding antenna is suitable preferably for use in an interferometer direction-finding method and/or in an Adcock direction-finding method, especially preferably for use in a correlative interferometer direction-finding method, and further especially preferably for use in mobile systems suitable for performing at least one of said direction-finding methods.

69. The invention further relates to a method for installing a direction-finding antenna in a radome, preferably for retrofitting a direction-finding antenna in a radome, comprising the following step: attaching at least one antenna element to the inside of an outer shell of the radome, wherein the direction-finding antenna is suitable preferably for use in an interferometer direction-finding method and/or in an Adcock direction-finding method, especially preferably in a correlative interferometer direction-finding method, and further especially preferably for use in mobile systems suitable for performing at least one of said direction-finding methods.

70. * The leaders affirmed their nations’ mutual support in exploring the most fundamental principles of science as embodied in the arrangement reached to cooperate on building a Laser Interferometer Gravitational Wave Observatory (LIGO) in India in the near future and welcomed the formation of the India-U.S.

71. After this, Prime Minister met scientists from the Laser Interferometer Gravitational-Wave Observatory (the LIGO project) which, as you know, has resulted in one of the most outstanding scientific breakthroughs in recent years by proving Gravitational Waves theory of Einstein correct. Some Indian scientists are now part of the LIGO project.

72. A sensor (100) comprises an optical modulator (102) that generates a modulation signal, an interferometer (104) that mixes an acoustic signal evoked by a pulsed laser (110) with the modulation signal to down-convert the acoustic signal to lower frequencies, and a photodetector (124) that detects the down-converted signal.

73. Through a partnership between the Indian Initiative in Gravitational Observations (IndIGO) and the U.S. Laser Interferometer Gravitational-wave Observatory Laboratory and other institutes in India, both sides are working to build a world-class gravitational wave detector in India that will greatly enhance a network of detectors under construction in the United States, Europe, and Japan to study gravitational waves emanating from some of the most cataclysmic events in our universe – black holes, neutron stars, and supernovas.