Pulse optical fiber laser based on erbium-ytterbium co-doped double-clad optical fiber structure
A fiber laser and double-clad fiber technology, which is applied in the direction of lasers, laser components, and the structure/shape of optical resonators, can solve the problems of large volume, low output power, and low signal-to-noise ratio, and achieve high output power , high signal-to-noise ratio, small volume effect
Inactive Publication Date: 2015-12-23
LEISHEN INTELLIGENT SYST CO LTD
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Problems solved by technology
[0004] In view of the above-mentioned defects, the object of the present invention is to provide a pulsed fiber laser based on an erbium-ytterbium co-doped double-clad fiber structure, which solves the problems of low output power, large volume, and low signal-to-noise ratio of the current common 1550nm pulsed fiber laser.
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[0025] 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 embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0026] With illustrations, see figure 1 , including a circuit module 30 and an optical path module, the optical path module includes a single-mode semiconductor laser 3, a three-port circulator 4, a first fiber amplifier 10, a second fiber amplifier 20; the first fiber amplifier 10 and the The second optical fiber amplifier 20 shares the same multimode semiconductor laser 17;
[0027] The first optical fiber amplifier 10 includes the multimode semiconductor laser 17, the multimode beam splitter 16, the first beam combiner 11, the first gain fiber 12 and the narrowband reflector 13 connected in seq...
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Abstract
The invention is applicable to the technical field of optical fiber lasers, and provides a pulse optical fiber laser based on an erbium-ytterbium co-doped double-clad optical fiber structure. The pulse optical fiber laser comprises a circuit module and a light path module. The light path module comprises a single-mode semiconductor laser, a three-port circulator, a first optical fiber amplifier, and a second optical fiber amplifier. The first optical fiber amplifier and the second optical fiber amplifier share the same multi-mode semiconductor laser. The first optical fiber amplifier comprises the multi-mode semiconductor laser, a multi-mode beam splitter, a first beam combiner, a first gain optical fiber and a narrowband reflector which are connected in sequence. A signal is emitted from the multi-mode semiconductor laser, passes through the multi-mode beam splitter, and respectively accesses a pre-amplifier stage and a main power amplifier stage. The first gain optical fiber is an erbium-ytterbium co-doped double-clad optical fiber. Therefore, the problem that a 1550nm optical fiber laser is low in output power, large in size and low in signal-to-noise ratio is solved.
Description
technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a pulsed fiber laser based on an erbium-ytterbium co-doped double-clad fiber structure. Background technique [0002] The 1550nm band is located in the third low-loss communication window. Lasers in this band have strong penetrating power to clouds and smoke, and the damage threshold of the human eye in the 1550nm band is four orders of magnitude higher than that in the 1060nm band, so the The laser band is also known as the "eye-safe" laser band. With its above characteristics, this band laser is widely used in optical fiber communication, laser radar, laser ranging, 3D scanning, biomedicine and other fields. The 1550nm fiber laser has become a research hotspot in the current laser field due to its low pumping threshold power, high conversion efficiency, compact structure, good heat dissipation, and complete compatibility with existing optical fiber communication and optic...
Claims
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Login to View More IPC IPC(8): H01S3/067H01S3/08H01S3/10
Inventor 胡小波汪鹏童志鹏
Owner LEISHEN INTELLIGENT SYST CO LTD