Low repetition frequency erbium-doped femtosecond fiber laser

A technology of femtosecond optical fiber and erbium-doped optical fiber, which is applied to lasers, laser components, phonon exciters, etc., can solve problems such as poor compatibility, poor stability, and complex structure, so as to reduce system complexity and cost and increase stability. degree of effect

Pending Publication Date: 2021-01-26
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The present disclosure provides a low repetition frequency erbium-doped femtosecond fiber laser to solve the problems of existing low repetition frequency

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  • Low repetition frequency erbium-doped femtosecond fiber laser
  • Low repetition frequency erbium-doped femtosecond fiber laser
  • Low repetition frequency erbium-doped femtosecond fiber laser

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Embodiment Construction

[0024]In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings.

[0025]figure 1 A schematic diagram of a low repetition frequency erbium-doped femtosecond fiber laser provided by an embodiment of the present disclosure is schematically shown.

[0026]Such asfigure 1 As shown, the present disclosure provides a low repetition frequency erbium-doped femtosecond fiber laser, which includes a NALM ring, a main ring and a first coupler 5.

[0027]Specifically, the NALM ring includes a pump source input terminal 1, a wavelength division multiplexer 2, a polarization-maintaining erbium-doped fiber 3, and a first polarization-maintaining passive fiber 4, which is the ring body of the NALM ring , The pump source input 1, the wavelength division multiplexer 2, the polarization-maintaining erbium-doped fibe...

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Abstract

The invention provides a low repetition frequency erbium-doped femtosecond fiber laser, which comprises an NALM ring, a main ring and a first coupler, and is characterized in that the NALM ring comprises a pumping source input end, a wavelength division multiplexer, a polarization-maintaining erbium-doped fiber and a first polarization-maintaining passive fiber, and the first polarization-maintaining passive fiber is an annular main body of the NALM ring; the pumping source input end, the wavelength division multiplexer and the polarization-maintaining erbium-doped optical fiber are all connected to the first polarization-maintaining passive optical fiber; the main ring comprises a polarization-maintaining isolator, a second coupler, an output end and a second polarization-maintaining passive optical fiber, the second polarization-maintaining passive optical fiber is an annular main body of the main ring, the polarization-maintaining isolator and the second coupler are connected to thesecond polarization-maintaining passive optical fiber, and the output end is connected with the output end of the second coupler; and the first coupler connects the NALM ring and the main ring. According to the laser, the NALM ring is fully utilized for mode locking, the repetition frequency is reduced, the stability is high, the structure is simple, and the cost is reduced.

Description

Technical field[0001]The present disclosure relates to the technical field of fiber lasers, in particular to a low repetition frequency erbium-doped femtosecond fiber laser.Background technique[0002]Existing femtosecond lasers generally adopt passive mode-locking methods. Common mode-locking methods include carbon nanotubes (CNT), semiconductor saturable absorption mirrors (SESAM), and nonlinear polarization rotation effects (NPE). The use of carbon nanotubes (CNT) or semiconductor saturable absorption mirrors (SESAM) is a material mode locking device with a certain service life; in general, the use of nonlinear polarization rotation effect (NPE) mode locking can only be achieved in the spatial optical path. Due to their all-fiber structure, the nonlinear fiber environment (NOLM) and the nonlinear fiber amplification environment (NALM) have the characteristics of mode-locking stability and long-term effectiveness as a mode-locking device, and are more advanced femtosecond laser mode...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/091H01S3/11H01S3/13
CPCH01S3/06716H01S3/06754H01S3/06791H01S3/091H01S3/1112H01S3/1301
Inventor 潘映伶纪荣祎张滋黎崔成君孟繁昌周维虎董登峰石俊凯王国名
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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