Laura M Owens

US Patent:

20220200225, Jun 23, 2022

Filed:

Dec 21, 2020

Appl. No.:

17/129750

Inventors:

- Hamamatsu-shi, JP
- Wilmington MA, US
Akinori ASAI - Hamamatsu-shi, JP
Yusei NAGATA - Hamamatsu-shi, JP
Shinichi OHBA - Hamamatsu-shi, JP
Takayuki OHSHIRO - Hamamatsu-shi, JP
Matthew PARTLOW - Somerville MA, US
Ron COLLINS - Londonderry NH, US
Stephen F. HORNE - Medford MA, US
Laura OWENS - Arlington MA, US

International Classification:

H01S 3/034
H01S 3/038

Abstract:

A light emitting sealed body includes: a housing which stores a discharge gas and is provided with a first opening to which first light is incident along a first optical axis and a second opening from which second light is emitted along a second optical axis; a first window portion which hermetically seals the first opening; a second window portion which hermetically seals the second opening; and a first electrode and a second electrode. The housing is formed of a light shielding material which does not transmit the first light and the second light. An internal space is defined by the housing, the first window portion, and the second window portion and the internal space is filled with the discharge gas. The first opening and the second opening are disposed so that the first optical axis and the second optical axis intersect each other.

US Patent:

20220200226, Jun 23, 2022

Filed:

Dec 21, 2020

Appl. No.:

17/129755

Inventors:

- Hamamatsu-shi, JP
- Wilmington MA, US
Akinori ASAI - Hamamatsu-shi, JP
Yusei Nagata - Hamamatsu-shi, JP
Shinichi OHBA - Hamamatsu-shi, JP
Matthew PARTLOW - Somerville MA, US
Ron COLLINS - Londonderry NH, US
Stephen F. HORNE - Medford MA, US
Laura OWENS - Arlington MA, US

International Classification:

H01S 3/038
H01S 3/097
H01S 3/034

Abstract:

A light emitting unit includes a light emitting sealed body and a voltage application circuit. The light emitting sealed body includes a container to which laser light for maintaining plasma is incident and from which light from the plasma is emitted, a first electrode which includes a first discharge portion, and a second electrode which includes a second discharge portion. An end portion of the first discharge portion has a shape in which a thickness is thinned as it goes toward the second discharge portion and an end surface of the second discharge portion extends along a plane perpendicular to an extending direction of the first discharge portion. The voltage application circuit controls a potential difference between the first electrode and the second electrode by adjusting a voltage applied to at least the first electrode.