Interferometer with multiple wavelength sources of different coherence lengths

    公开(公告)号:US11274915B2

    公开(公告)日:2022-03-15

    申请号:US17052448

    申请日:2019-04-29

    摘要: Methods, devices and systems are described that use a combination multiple light sources having different coherence lengths to measure surface characteristics of an object. One example system includes a two laser sources configured to operate at a first and a second center wavelength, a broadband source configured to operate at a range of wavelengths outside of the operating range of the at least two lasers, a phase mask array and a color filter arranged, respectively, to impart different phase delays and provide spectral filtering corresponding to the emitted radiation from the sources. A pixelated sensor device is positioned to simultaneously measure intensity values associated with a plurality of interferograms formed due to interference of light from the light sources after propagation through the phase mask array and the color filter. The measured intensity values enable the determination of surface characteristics of the object.

    SYSTEM AND METHOD FOR DETERMINING A PERTURBATION ENERGY OF A QUANTUM STATE OF A MANY-BODY SYSTEM

    公开(公告)号:US20210398010A1

    公开(公告)日:2021-12-23

    申请号:US17351873

    申请日:2021-06-18

    IPC分类号: G06N10/00

    摘要: A method for determining a perturbation energy of a quantum state of a many-body system includes constructing a wave function that approximates the quantum state by adjusting parameters of the wave function to minimize an expectation value of a zeroth-order Hamiltonian. The zeroth-order Hamiltonian explicitly depends on a finite mass of each of a plurality of interacting quantum particles that form the many-body system, the quantum state has a non-zero total angular momentum, the wave function is a linear combination of explicitly correlated Gaussian basis functions, and each of the explicitly correlated Gaussian basis functions includes a preexponential angular factor. The perturbation energy is calculated from the wave function and a perturbation Hamiltonian that explicitly depends on the finite mass of each of the plurality of interacting quantum particles. The perturbation energy may be added to the minimized expectation value to obtain a total energy of the quantum state.

    Ultralight very large aperture space telescope and methods using mode lenses and shims

    公开(公告)号:US11204509B2

    公开(公告)日:2021-12-21

    申请号:US17290163

    申请日:2019-10-30

    IPC分类号: G02B5/18 G02B27/36 G02B27/42

    摘要: A kinematically engaged yoke system (KEYS) for multiple-order-diffraction engineered material may comprise a harness comprising a frame and a plurality of semi-kinematic keys disposed on the frame, wherein the semi-kinematic keys are configured based on a MOD-side mechanical profile of a plurality of segments of a multiple-order-diffraction engineered material, and wherein the MOD-side mechanical profile, when engaged with the semi-kinematic keys, functions as a fiducial that provides alignment between neighboring segments; and one or more shims disposed between one or more pairs of neighboring segments of the plurality of segments of the multiple-order-diffraction engineered material, wherein the one or more shims facilitate alignment of the one or more pairs of neighboring segments of the plurality of segments based on a translation across one or more surfaces of the one or more shims.