High-power narrow-linewidth fiber laser based on ring cavity oscillator seed source

A technology of fiber lasers and oscillators, applied in lasers, laser components, phonon exciters, etc., can solve problems such as stimulated Raman scattering, difficult line width control, and unstable output laser timing

Inactive Publication Date: 2021-05-11
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

However, the nonlinear effect of self-phase modulation, cross-phase modulation and four-wave mixing caused by multiple longitudinal modes in the oscillator and the spatial hole-burning effect caused by the standing wave field structure will bring about spectral broadening, which limits the linewidth at hi

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  • High-power narrow-linewidth fiber laser based on ring cavity oscillator seed source
  • High-power narrow-linewidth fiber laser based on ring cavity oscillator seed source
  • High-power narrow-linewidth fiber laser based on ring cavity oscillator seed source

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Embodiment Construction

[0033] 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.

[0034] All materials and instruments used in the following examples are commercially available.

[0035] This embodiment provides a high-power narrow-linewidth fiber laser based on a ring cavity oscillator seed source, and its structural block diagram is shown in figure 1 As shown, the seed source of the ring cavity oscillator, the main laser amplifier and the main output terminal 10 are included, and the seed source of the ring cavity oscillator, the main laser amplifier and the main output terminal 10 are connected in sequence; the seed source of the ring cavity oscillator includes filter device...

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Abstract

The invention provides a high-power narrow-linewidth optical fiber laser based on an annular cavity oscillator seed source. The high-power narrow-linewidth optical fiber laser comprises the annular cavity oscillator seed source, a main laser amplifier and a main output end, and the annular cavity oscillator seed source, the main laser amplifier and the main output end are connected in sequence; and the annular cavity oscillator seed source comprises a filter device, a laser output module and a pre-laser amplifier, the filter device, the laser output module and the pre-laser amplifier are sequentially connected to form an annular structure, and the annular cavity oscillator seed source is connected with the main laser amplifier through one output end of the laser output module. The laser provided by the invention only needs one-stage amplification, is simple in structure and reliable in performance, can reduce the complexity of a high-power narrow-linewidth fiber laser system, enables the power to be further amplified without being inhibited by a nonlinear effect, is more stable in output laser time sequence, and can improve the inhibition capability of stimulated Raman scattering in the power amplification process.

Description

technical field [0001] The invention belongs to the field of fiber laser equipment, in particular to a high-power narrow-linewidth fiber laser based on a seed source of a ring cavity oscillator. Background technique [0002] High-power narrow-linewidth fiber laser is an important unit for spectral synthesis and coherent synthesis. The popular high-power narrow-linewidth fiber lasers can be divided into three types according to the type of seed source, namely, single-frequency phase-modulated laser, narrow-linewidth oscillator, and superfluorescent or random laser filter seed source. [0003] Single-frequency phase-modulated lasers need to suppress the stimulated Brillouin scattering effect in the power amplification process because the single-frequency laser linewidth is too narrow, and require an expensive and accurate phase modulation system to apply white noise or sinusoidal signal phase modulation to make its spectrum Broadening; due to the low output power of single-fr...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/0941
CPCH01S3/06708H01S3/06716H01S3/06791H01S3/0941
Inventor 姜曼张嵩马鹏飞马阎星李灿周朴姜宗福
Owner NAT UNIV OF DEFENSE TECH
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