# Output coupler

> partially reflective mirror used in lasers

**Wikidata**: [Q17125851](https://www.wikidata.org/wiki/Q17125851)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Output_coupler)  
**Source**: https://4ort.xyz/entity/output-coupler

## Summary
An output coupler is a partially reflective mirror used in lasers. It is an electronic component that functions as the mirror element within a laser system, commonly referred to by the abbreviation OC or the Japanese name 出力カプラ.

## Key Facts
- Output coupler is described as a "partially reflective mirror used in lasers."
- Instance of: electronic component (a basic discrete device or physical entity in an electronic system used to affect electrons or their associated fields).
- Common aliases: "OC" and the Japanese name "出力カプラ."
- Wikipedia title: "Output coupler."
- Wikipedia language editions available (sitelinks): be, en, fa.
- Wikimedia Commons image: https://commons.wikimedia.org/wiki/Special:FilePath/Laser_dielectric_output_coupler_centered_@_550nm.png
- Freebase ID: /m/027np2s.
- Microsoft Academic ID (discontinued): 9986408.
- Wikidata sitelink_count for this item: 3.
- Related class "electronic component" has a sitelink_count of 58.

## FAQs
### Q: What is an output coupler?
A: An output coupler is a partially reflective mirror used in lasers. It serves as the mirror element within a laser system and is classified as an electronic component.

### Q: What are common names or abbreviations for an output coupler?
A: Common aliases include "OC" and the Japanese name "出力カプラ."

### Q: Where can I find more information or images of an output coupler?
A: The topic appears under the Wikipedia title "Output coupler" (available in be, en, fa). An image is available on Wikimedia Commons at the provided URL.

### Q: Does the output coupler have standard database identifiers?
A: Yes. Known identifiers include Freebase ID /m/027np2s and Microsoft Academic ID 9986408 (discontinued).

## Why It Matters
The output coupler matters because it is the defined partially reflective mirror element used in laser devices and is therefore a named, identifiable component within laser-related systems. As an instance of the electronic component class, it is part of the vocabulary used to describe and categorize discrete devices and optical elements in electronics and photonics contexts. The presence of dedicated entries and identifiers (Wikipedia pages in multiple languages, a Wikimedia Commons image, Freebase and Microsoft Academic identifiers) indicates that the term is established and referenced across data and knowledge platforms. For engineers, researchers, students, or documentation efforts that catalogue or discuss laser systems, the output coupler is a specific named component to identify when describing the mirror that provides partial reflectivity within a laser resonator. Its multilingual and linked-data presence supports interoperability of technical information across resources.

## Notable For
- Being explicitly defined as a "partially reflective mirror used in lasers."
- Common abbreviations and multilingual naming, including "OC" and Japanese "出力カプラ."
- Presence across knowledge platforms: Wikipedia (be, en, fa), Wikimedia Commons image, Freebase entry, and a Microsoft Academic identifier.
- Classification as an instance of the electronic component class, linking it to broader electronic and device taxonomies.

## Body
### Definition
- Output coupler: a partially reflective mirror used in lasers.
- The term identifies the mirror element within a laser system.

### Classification
- Instance of: electronic component.
- The electronic component class is described as a basic discrete device or physical entity in an electronic system used to affect electrons or their associated fields.

### Aliases and Names
- Common abbreviation: OC.
- Japanese name: 出力カプラ.

### Identifiers and Database Entries
- Freebase ID: /m/027np2s.
- Microsoft Academic ID (discontinued): 9986408.
- Wikidata description: partially reflective mirror used in lasers.
- Wikidata sitelink_count for the item: 3.

### Wikipedia and Wikimedia Commons Coverage
- Wikipedia title: "Output coupler."
- Wikipedia language editions with pages: be, en, fa.
- Available image on Wikimedia Commons: https://commons.wikimedia.org/wiki/Special:FilePath/Laser_dielectric_output_coupler_centered_@_550nm.png

### Related Classes
- Related class: electronic component (sitelink_count: 58).

## References

1. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)