A method for preparing saturable absorber devices based on black phosphorus
A technology of saturable absorption and black phosphorus, which is applied to laser components, lasers, electrical components, etc., can solve the problems of not successfully making saturable absorbers, harsh growth conditions of black phosphorus, and inability to grow thin films, etc., to achieve Improve the success rate of preparation, avoid blind transfer, and improve the yield
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[0030] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and the embodiments.
[0031] A method for preparing a saturable absorber device based on black phosphorus, adopts directional transfer technology to deposit two-dimensional layered black phosphorus on an optical fiber head, as the saturable absorption layer of the saturable absorber device.
[0032] As a new type of saturable absorber, black phosphorus can be used for laser Q-switching, mode locking, optical signal processing or pulse shaping. It is a two-dimensional layered atomic crystal material with extremely high carrier mobility and excellent optical properties, which can achieve low unsaturated absorption loss and low saturated absorption intensity. The resonance absorption of black phosphorus can reach 20% to 30%, which can achieve wide-band absorption. In addition, black phosphorus is a direct band gap material with a certain energy band gap. The band gap of ...
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