Vertical cavity surface emitting laser and atomic oscillator
US-2015180206-A1 · Jun 25, 2015 · US
Vertical cavity surface emitting laser and atomic oscillator
US9634467B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9634467-B2 |
| Application number | US-201414574813-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 18, 2014 |
| Priority date | Dec 20, 2013 |
| Publication date | Apr 25, 2017 |
| Grant date | Apr 25, 2017 |
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- Title
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Abstract
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A vertical cavity surface emitting laser includes: a laminated body; an insulation layer which is provided over at least a portion of the laminated body; an electrode of which at least a portion is provided over the laminated body; a pad; and a wiring which connects the electrode and the pad, wherein the laminated body includes a first mirror layer, an active layer, and a second mirror layer, the laminated body includes a first distortion imparting portion, a second distortion imparting portion, and a resonance portion which is provided between the first distortion imparting portion and the second distortion imparting portion, in a plan view, the electrode is provided so as to cover at least a portion of the resonance portion, in the plan view, a width of the wiring is greater than a width of the first distortion imparting portion and is smaller than a width of the electrode.
First claim
Opening claim text (preview).
What is claimed is: 1. A vertical cavity surface emitting laser comprising: a substrate; a laminated body which is provided over the substrate; an insulation layer which is provided over at least a portion of the laminated body; an electrode of which at least a portion is provided over the laminated body; a wire-bonded pad; and a wiring which electrically connects the electrode and the pad, wherein the laminated body includes a first mirror layer provided over the substrate, an active layer provided over the first mirror layer, and a second mirror layer provided over the active layer, in a plan view, the laminated body includes a first distortion imparting portion, a second distortion imparting portion, and a resonance portion which is provided between and unitary with the first distortion imparting portion and the second distortion imparting portion and resonates light generated in the active layer, the first distortion imparting portion, the second distortion imparting portion, and the resonance portion each including portions of the first mirror layer, the active layer, and the second mirror layer, and in the plan view, the insulation layer is provided so as to cover at least a portion of the first distortion imparting portion, in the plan view, the electrode is provided so as to cover at least a portion of the resonance portion, in the plan view, the wiring is provided so as to cover at least the entirety of a portion of the first distortion imparting portion in a width direction, and in the plan view, a width of the wiring is greater than a width of the first distortion imparting portion and is smaller than a width of the electrode. 2. The vertical cavity surface emitting laser according to claim 1 , wherein, in the plan view, the first distortion imparting portion is covered with at least one of the electrode and the wiring. 3. The vertical cavity surface emitting laser according to claim 1 , wherein the first distortion imparting portion has a first width, the second distortion imparting portion has a second width, and the resonance portion has a third width which is greater than at least one of the first width and the second width. 4. An atomic oscillator comprising: the vertical cavity surface emitting laser according to claim 1 . 5. An atomic oscillator comprising: the vertical cavity surface emitting laser according to claim 2 . 6. An atomic oscillator comprising: the vertical cavity surface emitting laser according to claim 3 .
Assignees
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Classifications
characterised by the material · CPC title
having positive and negative electrodes on the same side of the substrate · CPC title
characterised by the shape · CPC title
using the beating between two closely spaced optical frequencies, i.e. heterodyne mixing · CPC title
Non-circular shape of the structure · CPC title
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- What does patent US9634467B2 cover?
- A vertical cavity surface emitting laser includes: a laminated body; an insulation layer which is provided over at least a portion of the laminated body; an electrode of which at least a portion is provided over the laminated body; a pad; and a wiring which connects the electrode and the pad, wherein the laminated body includes a first mirror layer, an active layer, and a second mirror layer, t…
- Who is the assignee on this patent?
- Seiko Epson Corp
- What technology area does this patent fall under?
- Primary CPC classification H01S5/1835. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 25 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 9 related publications on this page (citations in our corpus or others sharing the same primary CPC).