Encyclopedia … combined with a great Buyer's Guide!

Brightness Converters

Author: the photonics expert

Definition: optically pumped devices where the generated optical output has a higher brightness than the optical pump source

Categories: article belongs to category photonic devices photonic devices, article belongs to category laser devices and laser physics laser devices and laser physics

DOI: 10.61835/rka   Cite the article: BibTex plain textHTML

The output power of a laser device is always lower than the pump power, since some energy losses are always occurring in laser operation. Nevertheless, the brightness (more precisely: the radiance) of an optically pumped laser can be far higher than the brightness of its pump source, if the pump source has a poor beam quality (thus a low brightness) while the beam quality of the output beam is much better. In such cases, a laser can be said to have the function of a brightness converter.

Some examples of lasers serving as brightness converters are:

In many cases, the function as a brightness converter is essential for laser applications. For example, many solid-state lasers are used in laser material processing because their pump light, having too low brightness, could not be used directly (although direct diode lasers are gaining traction).

Another frequently required function of a solid-state laser is pulse generation e.g. via Q switching. This might also be considered as a kind of brightness converter function since relatively long pump pulses can be converted into far shorter laser pulses, effectively concentrating energy in time.

More to Learn

Encyclopedia articles:

Questions and Comments from Users

Here you can submit questions and comments. As far as they get accepted by the author, they will appear above this paragraph together with the author’s answer. The author will decide on acceptance based on certain criteria. Essentially, the issue must be of sufficiently broad interest.

Please do not enter personal data here. (See also our privacy declaration.) If you wish to receive personal feedback or consultancy from the author, please contact him, e.g. via e-mail.

Spam check:

By submitting the information, you give your consent to the potential publication of your inputs on our website according to our rules. (If you later retract your consent, we will delete those inputs.) As your inputs are first reviewed by the author, they may be published with some delay.


Share this with your network:

Follow our specific LinkedIn pages for more insights and updates: