公开(公告)号：US10921246B2

公开(公告)日：2021-02-16

申请号：US16564662

申请日：2019-09-09

Applicant: Picomole Inc.

Inventor： Christopher Quentin Purves ,  Perry F. Kain ,  Denis Dufour

IPC: G01J3/00 ,  G01N21/39 ,  G01N21/3504 ,  G01J3/42 ,  G01N21/552 ,  G01N21/77

Abstract: There is provided a method of tuning a resonant cavity and a cavity ring-down spectroscopy system using the same. A first mirror is actuated at a first end of a resonant cavity to move in a direction between a first position relative to a second mirror at a second end of the resonant cavity, at which a cavity length between the first mirror and the second mirror is less than a resonance length for a laser beam, and a second position relative to the second mirror, at which the cavity length is greater than the resonance length. An event is triggered when the cavity length is proximal to the resonance length. The first mirror is continuously actuated in the direction between the first position and the second position during the event.

公开(公告)号：US11506601B2

公开(公告)日：2022-11-22

申请号：US17160791

申请日：2021-01-28

Applicant: Picomole Inc.

Inventor： Christopher Quentin Purves ,  Perry F. Kain ,  Denis Dufour

IPC: G01J3/45 ,  G01N21/39 ,  G01N33/497 ,  G01N1/40 ,  G01J3/42 ,  G01N21/3504 ,  G01N21/552 ,  G01J3/02 ,  G01N21/31 ,  G01J3/10 ,  G06N20/00 ,  G01N21/77

Abstract: There is provided a resonant cavity system. A first mirror is actuated at a first end of a resonant cavity to move in a direction between a first position relative to a second mirror at a second end of the resonant cavity, at which a cavity length between the first mirror and the second mirror is less than a resonance length for a laser beam, and a second position relative to the second mirror, at which the cavity length is greater than the resonance length. An event is triggered when the cavity length is proximal to the resonance length. The first mirror is continuously actuated to move in the direction between the first position and the second position during the event.

公开(公告)号：US11035789B2

公开(公告)日：2021-06-15

申请号：US16509207

申请日：2019-07-11

Applicant: Picomole Inc.

Inventor： Christopher Quentin Purves ,  Denis Dufour

IPC: G01N21/31 ,  G01N21/39 ,  G01N33/497 ,  G01N1/40 ,  G01J3/42 ,  G01N21/3504 ,  G01N21/552 ,  G01J3/02 ,  G01J3/10 ,  G06N20/00 ,  G01N21/77

Abstract: A cavity ring-down spectroscopy system and a method of modulating a light beam therein are provided. The cavity ring-down spectroscopy system includes at least one laser that generates a light beam, a first optical modulator positioned to attenuate the light beam from the at least one laser, a second optical modulator positioned to attenuate the light beam from the first optical modulator, a ring-down cavity positioned to receive the light beam from the second optical modulator, and at least one light sensor to detect an intensity of light leaked from the ring-down cavity.

公开(公告)号：US11499916B2

公开(公告)日：2022-11-15

申请号：US16599943

申请日：2019-10-11

Applicant: Picomole Inc.

Inventor： Christopher Quentin Purves ,  Denis Dufour

IPC: G01J3/26 ,  G01N21/39 ,  G01N33/497 ,  G01N1/40 ,  G01J3/42 ,  G01N21/3504 ,  G01N21/552 ,  G01J3/02 ,  G01N21/31 ,  G01J3/10 ,  G06N20/00 ,  G01N21/77

Abstract: A spectroscopy system is disclosed, and includes a resonant cavity, a first conduit configured to couple at a first end thereof to a gas source, and at a second end thereof to a first end of a sorbent tube containing a sample for analysis, and a second conduit configured to couple at a first end thereof to a second end of the sorbent tube, and at a second end thereof to the resonant cavity.

公开(公告)号：US20200319099A1

公开(公告)日：2020-10-08

申请号：US16564662

申请日：2019-09-09

Applicant: Picomole Inc.

Inventor： Christopher Quentin PURVES ,  Perry F. KAIN ,  Denis Dufour

IPC: G01N21/39 ,  G01N21/3504 ,  G01N21/552 ,  G01J3/42

Abstract: There is provided a method of tuning a resonant cavity and a cavity ring-down spectroscopy system using the same. A first mirror is actuated at a first end of a resonant cavity to move in a direction between a first position relative to a second mirror at a second end of the resonant cavity, at which a cavity length between the first mirror and the second mirror is less than a resonance length for a laser beam, and a second position relative to the second mirror, at which the cavity length is greater than the resonance length. An event is triggered when the cavity length is proximal to the resonance length. The first mirror is continuously actuated in the direction between the first position and the second position during the event.