High energy hybrid thulium-doped pulse laser single-frequency amplifier

Abstract

The invention discloses a high energy hybrid thulium-doped pulse laser single-frequency amplifier which comprises a seed resource, a wavelength division multiplexer, an optical fiber pumping source, a polarization-maintaining single-mode single-cladding thulium-doped optical fiber, an isolator, a beam splitter, an output end, a filter, an acoustic optical modulator, a semiconductor pumping source and a laser crystal. The high energy hybrid thulium-doped pulse laser single-frequency amplifier has the advantages of being simple in structure and stable in system, the optical fiber-solid combined method is used, optical fiber amplification is adopted for a prime stage, the capacity for amplifying small signals is effectively improved, crystal amplification is adopted for a post stage, the advantage that solid lasers are prone to generating low-multi-pulse pulsed light is developed, the nonlinear effect easily occurring in optical fiber amplifying under high power is effectively avoided, low-multi-pulse high-energy pulse output is accordingly achieved, and the good application aspect is achieved.

Description

technical field [0001] The invention relates to a thulium-doped laser amplifier, in particular to a high-energy hybrid thulium-doped pulse laser single-frequency amplifier. Background technique [0002] The wavelength range of thulium-doped fiber laser is located in the absorption peak of water molecules, which is safe for human eyes. It has a wide range of application value and application prospects in surgery, remote sensing, industrial processing, atmospheric optical communication, etc., especially for high-energy The demand for laser output is more urgent. At present, most thulium-doped lasers and amplifiers are continuous output, and there are few reports on pulse output lasers. Q-peak has reported a thulium-doped fiber laser exceeding 1kW, and the continuous single-frequency output has reached 608W, but the power density and peak power of the continuous thulium-doped fiber laser are still relatively low. Thulium-doped fiber lasers are more practical, so high-energy s...

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Problems solved by technology

However, there is no relevant report on the 2μm hybrid thulium-doped pulsed laser single-frequency amplifier

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