Graphite-based hybrid mode-locking technology

A graphene and graphene film technology, applied in laser parts, electrical components, lasers, etc., can solve problems such as implementation difficulties, and achieve the effects of adjustable modulation depth, ultra-fast recovery time, and low absorption intensity

Inactive Publication Date: 2013-01-09
泰州巨纳新能源有限公司
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Problems solved by technology

However, since the repetition frequency of the mode-locked pulse generated by passive mode-locking is inversely proportional to the length of the laser cavity, to achieve passive mode-locking with a repetition rate of GHz order, the laser cavity needs to be as short as cm order, which is difficult to realize

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  • Graphite-based hybrid mode-locking technology
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Embodiment Construction

[0020] according to figure 1 As shown, the present invention is a graphene-based hybrid mode locking technology. The graphene film 1 is attached to the optical fiber head 2, and the saturation absorption of graphene is combined with the active mode locking of amplitude or phase modulation to achieve hybrid mode locking. .

[0021] The graphene of the present invention is used to narrow the pulse width of an active mode-locked fiber laser while obtaining high repetition frequency and narrow pulse output; the graphene is attached to the end face of the fiber or the polishing surface of the side polishing fiber; the attachment The graphene used in the optical fiber is single-layer graphene, multi-layer graphene, or redox graphene polymer; the technology used to realize active mode locking is radio frequency modulation or laser injection locking modulation; the modulation used to realize active mode locking The device is an intensity modulator or a phase modulator; this hybrid mode-...

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Abstract

The invention relates to a graphite-based hybrid mode-locking technology, which is used for attaching graphite to the end surface of optical fiber or the polished surface of laterally-polished optical fiber and realizing hybrid mode-locking by combining the saturated absorption property of the graphite with an amplitude-modulated or phase-modulated active mode-locking, thereby obtaining high repetition frequency and narrow pulse output simultaneously. The graphite which is used as a saturated absorber has the advantages of low absorption strength, ultra-fast recovery time, adjustable modulation depth, broadband adjustability, low cost and the like and is combined with the advantages of high repetition frequency and the like of the active mode-locking, and therefore a narrow pulse mode-locking laser with high repetition frequency can be achieved. The hybrid mode-locking technology can be suitable for a solid laser or a space laser.

Description

technical field [0001] The invention relates to an optical mode-locking technology, especially a hybrid mode-locking realized based on graphene's saturated absorption combined with active mode-locking of amplitude or phase modulation. Background technique [0002] The current mode-locking technologies are mainly divided into three categories: active mode-locking, passive mode-locking and hybrid mode-locking. [0003] Active mode locking is a mode locking technology that periodically modulates the parameters of the resonant cavity through external signals to achieve phase locking between the longitudinal modes of each cavity. Its notable feature is that a modulation device is inserted into the laser cavity or an optical pulse is injected from the outside, and the optical wave in the cavity is actively modulated to achieve mode locking. Active mold-locking can be divided into modulator-based mode-locking technology, rational harmonic mode-locking technology and injection mode...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/098
Inventor 义理林张岩郑燃倪振华丁荣梁铮宋啸尘胡卫生
Owner 泰州巨纳新能源有限公司
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