Encyclopedia … combined with a great Buyer's Guide!

Amplification Factor

Definition: the factor by which the power of a signal is amplified

Alternative term: gain factor

German: Verstärkungsfaktor

Category: optical amplifiersoptical amplifiers


Cite the article using its DOI: https://doi.org/10.61835/9ke

Get citation code: Endnote (RIS) BibTex plain textHTML

The amplification factor (or gain factor) of an optical amplifier is the factor by which the input power is amplified. For lasers amplifiers, it depends on various details of the laser gain medium and on the degree of its excitation, apart from the optical wavelength and possibly the beam polarization. For optical parametric amplifiers, it depends on the length of the nonlinear crystal, the pump intensity, beam diameters and other factors.

During amplification of an intense optical pulse, the amplification factor may drop due to gain saturation. An effective amplification factor may then be defined as the ratio of output energy and input energy.

An alternative specification of gain is in terms of decibels, calculated as 10 times the logarithm to base 10 of the amplification factor.

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: