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US 5,963,578 AGranted
Microlaser cavity and microlaser with mode selection and manufacturing processes
AssigneeCommissariat a l'Energie Atomique
InventorsLaurent Fulbert, Marc Rabarot
Life of this patent
Estimating the term…
Abstract
A microlaser cavity including an entry mirror, an exit mirror (36), an active laser medium. Also included is a mechanism for selecting cavity transverse modes when the cavity is pumped, in order to enable oscillation of one or several cavity transverse modes and to prevent oscillation of other cavity transverse modes.
Claims35
A microlaser cavity, comprising:
- an active laser medium;
- an entry mirror on a first surface of the active laser medium;
- an exit mirror on a second surface of the active laser medium;
- and
- an intracavity diaphragm, different from the entry mirror and the exit mirror, disposed within the microlaser cavity and configured to enable oscillation of one of several cavity modes and to prevent oscillation of other cavity modes.
2 more elements
A microlaser cavity, comprising:
- an active laser medium;
- a concave entry mirror on a first surface of the active laser medium;
- and
- a plane exit mirror on a second surface of the active laser medium,
- wherein at least one of the concave entry mirror and the plane exit mirror is configured to enable oscillation of one of several cavity modes and to prevent oscillation of other cavity modes, and
- wherein the plane exit mirror comprises a disk-shape having a diameter less than or equal to ##EQU5## where .lambda. is a wavelength of a fundamental mode of the microlaser cavity, "n" is an index of the active laser medium, "L" is a length of the microlaser cavity, and "R" is a radius of curvature of the concave entry mirror.
3 more elements
A microlaser cavity, comprising:
- an active laser medium;
- an concave entry mirror on a first surface of the active laser medium;
- and
- an plane exit mirror on a second surface of the active laser medium,
- wherein at least one of the concave entry mirror and the plane exit mirror is configured to enable oscillation of one of several cavity modes and to prevent oscillation of other cavity modes, and
- wherein the concave entry mirror comprises a diameter less than or equal to ##EQU6## where .lambda. is a wavelength of a fundamental mode of the microlaser cavity, "n" is an index of the active laser medium, "L" is a length of the microlaser cavity, and "R" is a radius of curvature of the concave entry mirror.
3 more elements
A method of making a microlaser cavity, comprising the steps of:
- forming a concave entry mirror on a first surface of an active laser medium;
- forming a plane exit mirror on a second surface of the active laser medium;
- and
- engraving at least one of the concave entry mirror and the plane exit mirror so as to enable oscillation of one of several cavity modes and to prevent oscillation of other cavity modes,
- wherein the engraving step engraves the plane exit mirror into a disk-shape having a diameter less than or equal to ##EQU7## where .lambda. is a wavelength of a fundamental mode of the microlaser cavity, "n" is an index of the active laser medium, "L" is a length of the microlaser cavity, and "R" is a radius of curvature of the concave entry mirror.
2 more elements
A method of making a microlaser cavity, comprising the steps of:
- forming a concave entry mirror on a first surface of an active laser medium;
- forming a plane exit mirror on a second surface of the active laser medium;
- and
- engraving at least one of the concave entry mirror and the plane exit mirror so as to enable oscillation of one of several cavity modes and to prevent oscillation of other cavity modes,
- wherein the engraving step engraves the concave entry mirror to have a diameter less than or equal to ##EQU8## where .lambda. is a wavelength of a fundamental mode of the microlaser cavity, "n" is an index of the active laser medium, "L" is a length of the microlaser cavity, and "R" is a radius of curvature of the concave entry mirror.
2 more elements
A method of making a microlaser cavity, comprising the steps of:
- depositing a concave entry mirror on a first surface of an active laser medium;
- and
- depositing a plane exit mirror on a second surface of the active laser medium,
- wherein at least one of the steps of depositing the concave entry mirror and depositing the plane exit mirror selectively deposit only on areas of the active laser medium so as to enable oscillation of one of several cavity modes and to prevent oscillation of other cavity modes, and
- wherein the step of depositing the plane exit mirror selectively deposits the plane exit mirror to have a disk-shape with a diameter less than or equal to ##EQU9## where .lambda. is a wavelength of a fundamental mode of the microlaser cavity, "n" is an index of the active laser medium, "L" is a length of the microlaser cavity, and "R" is a radius of curvature of the concave entry mirror.
2 more elements
A method of making a microlaser cavity, comprising the steps of:
- depositing a concave entry mirror on a first surface of an active laser medium;
- and
- depositing a plane exit mirror on a second surface of the active laser medium,
- wherein at least one of the steps of depositing the concave entry mirror and the plane exit mirror selectively deposit only on areas of the active laser medium so as to enable oscillation of one of several cavity modes and to prevent oscillation of other cavity modes, and
- wherein the step of depositing the concave entry mirror selectively deposits the concave entry mirror to have a diameter less than or equal to ##EQU10## where .lambda. is a wavelength of a fundamental mode of the microlaser cavity, "n" is an index of the active laser medium, "L" is a length of the microlaser cavity, and "R" is a radius of curvature of the concave entry mirror.
2 more elements
A method of making a microlaser cavity, comprising the steps of:
- forming an entry mirror on a first surface of an active laser medium;
- forming an exit mirror on a second surface of the active laser medium;
- and
- forming an intracavity diaphragm, different from the entry mirror and the exit mirror, the intracavity diaphragm disposed within the microlaser cavity and configured to enable oscillation of one of several cavity modes and to prevent oscillation of other cavity modes.
1 more element
Dependencies are inferred from the claim text.