Picosecond fiber seed laser source structure
A laser source and seed technology, applied in the structure/shape of the active medium, laser, phonon exciter, etc., can solve the problem of short working life of a single point of a saturable absorption mirror, achieve simple structure, stable pulse signal, and reduce production cost effect
Active Publication Date: 2020-01-14
广东瀚盈激光科技有限公司
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Problems solved by technology
[0006] However, the main disadvantage of the mode-locked fiber seed laser using a semiconductor saturable absorption mirror is that the single-point working life of the saturable absorption mirror is relatively short (the single-point life of a well-designed seed source can reach about 1,000 hours)
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Embodiment 1
[0030] A picosecond fiber seed laser source structure described in Example 1, such as figure 1 As shown, it includes a resonant cavity of laser line type. The resonant cavity includes a semiconductor saturable absorption mirror 106, a beam splitter 105, a wavelength division synthesizer 104, a gain fiber 103, and a fiber grating 102; The pump laser diode 109 that couples the pump laser light into the resonator is connected; the optical splitter is connected with a fiber isolator 108 and a polarization-maintaining fiber isolator 107 respectively, and the polarization-maintaining fiber isolator is connected with a forward output as a seed source output signal port The port 110 is connected to the optical fiber isolator with a backward output port 111 for monitoring and system internal processing signal output.
[0031] The pump laser diode generates continuous 976nm pump laser light, which is coupled into the resonant cavity through a wavelength division synthesizer. At the beg...
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Abstract
The invention discloses a picosecond fiber seed laser source structure which includes a laser linear resonant cavity. A semiconductor saturation absorption mirror, a beam splitter, a wavelength division combiner, a gain fiber, and a fiber grating are arranged in the resonant cavity. The wavelength division combiner is connected with a pump laser diode which couples pump laser into the resonant cavity through the wavelength division combiner. The beam splitter is connected with a fiber isolator and a polarization maintaining fiber isolator. The polarization maintaining fiber isolator is connected with the front output port used as a seed source output signal port. The fiber isolator is connected with a backward output port for monitoring and outputting a signal processed in the system. Thestructure uses the non-polarization-maintaining (SM) laser diode as the pump. Pulses output by mode-locked laser are linearly polarized signals, reducing production costs. In addition, the operating point of a beam on the semiconductor saturable absorption mirror can be moved in a straight line. By using a stepping motor, the overall service life of an ultra-short pulse mode-locked fiber laser isincreased by more than 20 times than the single-point service life.
Description
technical field [0001] The invention relates to the technical field of ultrashort pulse fiber lasers, in particular to a picosecond fiber seed laser source structure with a working wavelength in the range of one micron, a working life of more than 10,000 hours, and a linearly polarized laser signal. Background technique [0002] As laser technology and lasers are used more and more in the fields of industrial manufacturing, medical treatment, communication, national defense, scientific research and entertainment, the requirements for laser systems and related devices are also growing. Not only is the demand for the number of laser systems and related devices increasing, but also the requirements for their types, performance, volume, and cost are also increasing. [0003] Ultrashort pulse laser, especially fiber-type ultrashort pulse laser is a new field of laser science, and more mature products have been gradually developed in recent years. Due to the unique properties of ...
Claims
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IPC IPC(8): H01S3/067H01S3/11H01S3/10
CPCH01S3/067H01S3/0675H01S3/1118H01S3/10084H01S3/10061
Inventor 黄旭辉
Owner 广东瀚盈激光科技有限公司