公开(公告)号：US10665735B2

公开(公告)日：2020-05-26

申请号：US14703364

申请日：2015-05-04

Applicant: Texas Instruments Incorporated

Inventor： Peter J. Hopper ,  William French ,  Paul Mawson ,  Steven Hunt ,  Roozbeh Parsa ,  Martin Fallon ,  Ann Gabrys ,  Andrei Papou

IPC: G01R33/02 ,  H01L21/58 ,  H01L29/82 ,  H01L31/024 ,  H01L31/00 ,  H01L31/0224 ,  H01L31/103 ,  H01L31/18 ,  G04F5/14 ,  H03L7/26

Abstract: A micro-fabricated atomic clock structure is thermally insulated so that the atomic clock structure can operate with very little power in an environment where the external temperature can drop to −40° C., while at the same time maintaining the temperature required for the proper operation of the VCSEL and the gas within the vapor cell.

公开(公告)号：US11193990B2

公开(公告)日：2021-12-07

申请号：US15621088

申请日：2017-06-13

Applicant: Texas Instruments Incorporated

Inventor： Roozbeh Parsa ,  David Brian McDonald ,  Ann Gabrys ,  Paul Mawson ,  Anston Joel Lobo

IPC: G01R33/26

Abstract: An integrated microfabricated alkali vapor cell sensor includes two alkali vapor regions, with a signal path through each. One or two signal emitters, with associated optical signal rotators, such as quarter wave plates, provide circularly polarized input signals into the alkali vapor regions, so that a first signal through the first alkali vapor region is circularly polarized in an opposite direction from a second signal through the second alkali vapor region. Output signals from the two alkali vapor regions are transformed to linearly polarized signals and then measured by one or more signal detectors. A first Larmor frequency is estimated from the output signal from the first alkali vapor region, and a second Larmor frequency is estimated from the output signal from the second alkali vapor region. A heading error-free Larmor frequency is estimated from the first Larmor frequency and the second Larmor frequency.

公开(公告)号：US20180306876A1

公开(公告)日：2018-10-25

申请号：US15621088

申请日：2017-06-13

Applicant: Texas Instruments Incorporated

Inventor： Roozbeh Parsa ,  David Brian McDonald ,  Ann Gabrys ,  Paul Mawson ,  Anston Joel Lobo

IPC: G01R33/26

CPC classification number: G01R33/26

Abstract: An integrated microfabricated alkali vapor cell sensor includes two alkali vapor regions, with a signal path through each. One or two signal emitters, with associated optical signal rotators, such as quarter wave plates, provide circularly polarized input signals into the alkali vapor regions, so that a first signal through the first alkali vapor region is circularly polarized in an opposite direction from a second signal through the second alkali vapor region. Output signals from the two alkali vapor regions are transformed to linearly polarized signals and then measured by one or more signal detectors. A first Larmor frequency is estimated from the output signal from the first alkali vapor region, and a second Larmor frequency is estimated from the output signal from the second alkali vapor region. A heading error-free Larmor frequency is estimated from the first Larmor frequency and the second Larmor frequency.

公开(公告)号：US20150311355A1

公开(公告)日：2015-10-29

申请号：US14703364

申请日：2015-05-04

Applicant: Texas Instruments Incorporated

Inventor： Peter J. Hopper ,  William French ,  Paul Mawson ,  Steven Hunt ,  Roozbeh Parsa ,  Martin Fallon ,  Ann Gabrys ,  Andrei Papou

IPC: H01L31/024 ,  H01L31/18 ,  H01L31/0224

Abstract: A micro-fabricated atomic clock structure is thermally insulated so that the atomic clock structure can operate with very little power in an environment where the external temperature can drop to −40° C., while at the same time maintaining the temperature required for the proper operation of the VCSEL and the gas within the vapor cell.

Abstract translation: 微制造的原子钟结构是绝热的，使得原子钟结构可以在外部温度下降到-40℃的环境中以非常小的功率运行，同时保持适当的温度 VCSEL和蒸汽池内的气体的操作。