Vertical cavity surface emitting laser and atomic oscillator
US-2016226221-A1 · Aug 4, 2016 · US
Vertical cavity surface emitting laser and atomic oscillator
US9397478B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9397478-B2 |
| Application number | US-201414576675-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 19, 2014 |
| Priority date | Dec 20, 2013 |
| Publication date | Jul 19, 2016 |
| Grant date | Jul 19, 2016 |
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- Title
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Abstract
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A vertical cavity surface emitting laser includes: a substrate; a laminated body which is provided over the substrate; an electrode of which at least a portion is provided over the laminated body; and a pad which is connected to the electrode, 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 the first distortion imparting portion and the second distortion imparting portion and resonates light generated in the active layer, and in the plan view, the pad is provided in a position that is not overlapped with at least one of the first distortion imparting portion and the second distortion imparting portion.
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 electrode of which at least a portion is provided over the laminated body; and a wire-bonded pad which is electrically connected to the electrode, wherein the laminated body includes a first mirror layer provided over the substrate, an active layer provided over the first mirror layer, a second mirror layer provided over the active layer, and an insulating layer that at least partially covers the laminated body, 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 the first distortion imparting portion and the second distortion imparting portion and resonates light generated in the active layer, in the plan view, a laminated body width of the resonance portion is greater than a laminated body width of the first distortion imparting portion and a laminated body width of the second distortion imparting portion, in the plan view, the insulating layer covers at least a portion of the first or second distortion imparting portion, in the plan view, the wire-bonded pad is provided in a position that is not overlapped with at least one of the first distortion imparting portion and the second distortion imparting portion, and the wire-bonded pad is electrically connected to the electrode by a lead out wiring, and in the plan view, the lead out wiring overlaps with one of the first and second distortion imparting portions. 2. The vertical cavity surface emitting laser according to claim 1 , wherein, in the plan view, the pad is provided in a position that is not overlapped with the resonance portion. 3. An atomic oscillator comprising: the vertical cavity surface emitting laser according to claim 1 . 4. An atomic oscillator comprising: the vertical cavity surface emitting laser according to claim 2 .
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Classifications
characterised by the material · CPC title
characterised by the shape · CPC title
having positive and negative electrodes on the same side of the substrate · CPC title
Non-circular shape of the structure · CPC title
using selective oxidation · CPC title
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- What does patent US9397478B2 cover?
- A vertical cavity surface emitting laser includes: a substrate; a laminated body which is provided over the substrate; an electrode of which at least a portion is provided over the laminated body; and a pad which is connected to the electrode, 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 …
- 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 Jul 19 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).