一种量子亏损分布调控高功率光纤放大装置及方法
By designing a gain fiber with modulated mode field and optimizing the pumping method, the thermal damage and nonlinear effects of traditional fiber lasers in the 2-micron band have been solved, achieving high-brightness kilowatt-level laser output, which is suitable for high-precision medical applications and transparent material processing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- MID INFRARED LASER RES INST (JIANGSU) CO LTD
- Filing Date
- 2022-12-26
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional high-power fiber lasers suffer from problems such as severe pump laser heating, low laser emission efficiency, and significant nonlinear effects affecting laser quality in the 2-micron band. In particular, the significant absorption of -OH in Tm and Ho fibers leads to thermal and optical damage, limiting the improvement of high-power lasers.
A high-power fiber amplifier device employing quantum loss distribution modulation is designed to control the gain fiber by using a double-clad structure and a step-index core diameter distribution. Combined with forward, reverse, or dual-end pumping methods, the core diameter and absorption coefficient can be increased or decreased, ensuring uniform distribution of thermally deposited power density and temperature, and suppressing nonlinear effects.
It achieves high-brightness laser output at the kilowatt level and above with a wavelength of 2 micrometers, improves the stability and beam quality of the laser, reduces thermal damage and nonlinear effects, and solves the high-quality light source requirements for high-precision medical treatment and transparent material processing.
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Figure CN116417882B_ABST