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2. Amazon has a secret site full of amazing deals on devices - AOL

   www.aol.com/lifestyle/amazon-device-sale...

   Amazon's secret sale section is bursting with amazing tech deals — up to 50% off ... Whether you want easy access to Alexa or great streaming, there's a device for everyone. (Photo: Amazon ...

3. Shop smart with the best Amazon device deals ahead of ... - AOL

   www.aol.com/news/shop-smart-best-amazon-device...

   Whether you need portable computing power or a new way to watch TV, shop the best Amazon device deals to save up to $100 ahead of October Prime Day.

4. Optical amplifier - Wikipedia

   en.wikipedia.org/wiki/Optical_amplifier

   An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics.

5. Optical parametric amplifier - Wikipedia

   en.wikipedia.org/wiki/Optical_parametric_amplifier

   An optical parametric amplifier, abbreviated OPA, is a laser light source that emits light of variable wavelengths by an optical parametric amplification process. It is essentially the same as an optical parametric oscillator , but without the optical cavity (i.e., the light beams pass through the apparatus just once or twice, rather than many ...

6. Quantum amplifier - Wikipedia

   en.wikipedia.org/wiki/Quantum_amplifier

   In physics, a quantum amplifier is an amplifier that uses quantum mechanical methods to amplify a signal; examples include the active elements of lasers and optical amplifiers. The main properties of the quantum amplifier are its amplification coefficient and uncertainty. These parameters are not independent; the higher the amplification ...

7. Integrated amplifier - Wikipedia

   en.wikipedia.org/wiki/Integrated_amplifier

   McIntosh MA6800 integrated amplifier. An integrated amplifier (pre/main amp) is an electronic device containing an audio preamplifier and power amplifier in one unit, as opposed to separating the two. [1] [2] Most modern audio amplifiers are integrated and have several inputs for devices such as CD players, DVD players, and auxiliary sources.