公开(公告)号：US20250020446A1

公开(公告)日：2025-01-16

申请号：US18883434

申请日：2024-10-04

Applicant: AOSense, Inc.

Inventor： Miroslav Y. Shverdin ,  Matthew Todd Cashen ,  Micah P. Ledbetter ,  Michael R. Matthews ,  Alexander F. Sugarbaker

IPC: G01B9/02 ,  G01V7/02 ,  G21K1/00

Abstract: A system for atom interferometry includes one laser configured to generate an output beam; an acousto-optic deflector disposed to generate two diffracted beams that are spatially offset with identical polarizations; and a birefringent crystal disposed to receive the two diffracted beams, where one of the two diffracted beams is passed through a half wave plate so that the two diffracted beams have orthogonal polarizations, where the birefringent crystal further disposed and selected in size to enable the two diffracted beams to re-overlap upon exiting the birefringent crystal by having one of the two diffracted beams walk toward the other of the two diffracted beams in the birefringent crystal, where the two diffracted beams have minimal path length differences so that the two diffracted beams are useable for interferometry.

公开(公告)号：US11456086B1

公开(公告)日：2022-09-27

申请号：US17026810

申请日：2020-09-21

Applicant: AOSense, Inc.

Inventor： Miroslav Y. Shverdin ,  Matthew Todd Cashen ,  Micah P. Ledbetter ,  Martin M. Boyd ,  Michael R. Matthews ,  Alexander F. Sugarbaker ,  Adam T. Black ,  Akash Rakholia ,  Igor Teper

IPC: G21K1/00 ,  G01P15/093 ,  G01V7/04

Abstract: A high bandwidth gravimeter or accelerometer includes laser(s), modulator(s), and an atomic interferometer. The laser(s) and modulator(s) produce four laser frequencies. A first and second pair of laser frequencies are each separated by wm. The first and second pair are offset by wshift. A first laser frequency of the first pair and a second laser frequency of the second pair are separated by wm+wshift. A second laser frequency of the first pair and a first laser frequency of the second pair are separated by wm−wshift. The first pair is routed to arrive from a first direction at atoms in an interaction region, and the second pair from a second direction. The first pair are phase stable with respect to the second pair. wm is adjusted so that wm+wshift or wm−wshift corresponds to a Raman resonance for the atomic interferometer.