Cascadable 729nm single-mode laser amplifier

A laser amplifier and amplifier technology, applied in the field of lasers, can solve the problems of low probability of success, easy mode hopping, high magnification, etc., and achieve the effect of improving stability and reliability and preventing damage

Active Publication Date: 2022-05-31
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

The main problem of this method is that the transmitted light of the superstable cavity as the seed laser is only tens of μW (microwatts), and the magnification is very high (hundreds to thousands). At this time, due to the low power of the seed laser compared with LD spontaneous emission , so the seed laser has a low probability of success when competing with LD spontaneous emission. On the one hand, it is difficult to achieve stimulated amplification, and on the other hand, it is easy to mode-hop after stimulated amplification.

Method used

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  • Cascadable 729nm single-mode laser amplifier
  • Cascadable 729nm single-mode laser amplifier
  • Cascadable 729nm single-mode laser amplifier

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Embodiment Construction

[0022] The following will combine Figure 1-Figure 4 To describe the present invention in detail, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention. In the figure, AC represents 220V alternating current.

[0023] The 729nm single-mode laser amplifier can be cascaded, including laser seed source 1, mode selection optical circuit 2, amplifying optical circuit, tapered amplifier protection circuit 5 and tapered amplifier 6. Output stage amplification optical path 4, laser seed source 1 is used to output seed laser, the seed laser is selected by mode selection optical path 2, and then multi-stage amplification of the laser is realized through several series cascaded stage amplification optical paths 3. During the implementation process , adopt the first-stage cascade-stage amplification optical circuit, the second-stage cascade-stage amplification optical circuit, the third-stage ca...

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Abstract

The invention relates to a cascadable 729nm single-mode laser amplifier, which includes a laser seed source, a mode selection optical path, an amplifying optical path, a tapered amplifier protection circuit and a tapered amplifier. The laser seed source is used to output the seed laser, and the seed laser is selected through the mode selection optical path, and then multi-stage amplified through several cascaded amplification optical paths, and then input into the tapered amplifier through the output stage amplification optical path to realize For the amplification of the seed laser, the tapered amplifier protection circuit controls the power input of the tapered amplifier by monitoring the state of the laser input to the tapered amplifier. The invention adopts cascading technology to realize high-magnification amplification of ultra-low-noise 729nm single-mode laser, improve the stability and reliability of laser amplification, and the tapered amplifier protection circuit can prevent the tapered amplifier from being damaged when there is no laser input.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a cascade-connectable 729nm single-mode laser amplifier. Background technique [0002] The key to quantum computing is how to build a real quantum calculator. The architecture of quantum calculator mainly includes photon polarization, cavity quantum electrodynamics (CQED), ion trap and nuclear magnetic resonance (NMR). nuclear magnetic resonance, NMR), the ion trap architecture is the most successful one that can satisfy fault-tolerant quantum computing. [0003] 40 Ca + Ionic|4S 1 / 2 ,m J =-1 / 2> The excited state has a lifetime as long as (1.167±0.007) s and a magnetic field sensitivity as low as 5.6MHz / mT, making it the main working substance for quantum computing in the ion trap architecture. in order to 40 Ca + From Ground State | 3D 5 / 2 ,m J =-1 / 2> Excited to |4S 1 / 2 ,m J =-1 / 2> excited state, it is necessary to use a 729nm laser with a phase noise of only ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/23H01S3/08
CPCH01S3/2316H01S3/08031
Inventor 吴伟张文攀谢艺张杰秦青青陈婷
Owner NAT UNIV OF DEFENSE TECH
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