980nm dissipative soliton mode-locked laser
A mode-locked laser, dissipating soliton technology, applied in the laser field, can solve the problems of low coupling efficiency, inconvenient practical application, poor stability, etc., and achieve the effect of long life
Inactive Publication Date: 2014-03-05
BEIJING UNIV OF TECH
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The existing 980nm ytterbium-doped mode-locked fiber lasers are all implemented in the form of spatial coupling, the coupling efficiency of the system is relatively low, and the stability is poor, which is not convenient for practical application
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the given examples are not intended to limit the present invention.
[0027] Such as figure 1 As shown, this embodiment includes a wavelength division multiplexer, a gain fiber 5, an isolator 9, and a coupling output element, wherein a bandpass filter 6, a first polarization controller 7, and a second polarization controller 8 are also included. The multiplexer, the gain fiber 5, the bandpass filter 6, the first polarization controller 7, the isolator 9, the second polarization controller 8 and the coupling output element are connected in sequence by optical fibers to form an all-fiber ring cavity.
[0028] The all-fiber ring cavity has a compact structure, better stability than the space coupling method, and has lower laser threshold and loss.
[...
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The invention provides a 980nm dissipative soliton mode-locked laser, and relates to the technical field of laser, aiming at solving the problems that existing lasers are realized in a way of space coupling, so that a system is low in coupling efficiency and poor in stability. The 980nm dissipative soliton mode-locked laser comprises a wavelength division multiplexer, a gain fiber, an isolator, a coupling output element, a band-pass filter, a first polarization controller and a second polarization controller, wherein the wavelength division multiplexer, the gain fiber, the band-pass filter, the first polarization controller, the isolator, the second polarization controller are connected with the coupling output element in sequence of optical fiber, so that a full-optical fiber ring-shaped cavity is formed. After the 980nm dissipative soliton mode-locked laser is adopted, stable dissipative soliton mode-locked pulse output can be realized, the mode locking repeat frequency is 20.38MHz, the maximum output power is 26.1mW, a mode locking threshold value is 170mW, and the pulse width is 70-80ps; the 980nm dissipative soliton mode-locked laser not only can generate blue light of about 490nm by frequency multiplication, but also can serve as a light source with high brightness and long service life, and can be taken as a pumping source of an erbium-doped amplifier.
Description
technical field [0001] The invention belongs to the technical field of lasers, in particular to a laser, especially a 980nm dissipation soliton mode-locked laser. Background technique [0002] Mode-locked fiber lasers are widely used in optical communications, micromachining, and photoelectric detection systems due to their excellent characteristics such as compact structure, low cost, good heat dissipation, and high output beam quality. With the continuous development and progress of fiber optic technology and mode-locking technology, the performance and some parameters of fiber laser output ultrashort pulses have reached or even exceeded that of traditional solid-state femtosecond lasers, and it is expected to become a popular ideal light source for ultrafast laser applications. [0003] Among the many mode-locked fiber lasers, ytterbium-doped mode-locked fiber lasers are developing most rapidly. Since the ytterbium-doped fiber has a wide absorption spectrum from 800nm ...
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IPC IPC(8): H01S3/067H01S3/098
Inventor 李平雪姚毅飞池俊杰胡浩伟张光举赵自强杨春
Owner BEIJING UNIV OF TECH