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A supercontinuum laser and fiber laser technology, applied in the field of laser optoelectronics, can solve problems such as the shortage of mid-to-far infrared laser light sources, and achieve the effects of high-medium, far-infrared laser output, high power, and low-cost high-power laser output
Inactive Publication Date: 2013-01-02
BEIJING UNIV OF TECH
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[0005] The invention provides a mid-to-far infrared supercontinuum fiber laser, which is used to solve the current shortage of mid-to-far infrared laser light sources and realize mid-to-far infrared supercontinuum laser output
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Embodiment 1
[0025] Such as figure 1 As shown, a schematic diagram of a mid-to-far infrared supercontinuum fiber laser, which specifically includes a pulsed fiber laser 1, a quartz photonic crystal fiber 3, a passive mid-infrared chalcogenide glass fiber 4, a filter 5, an excitation source 6, and a doped rare earth ion Chalcogenide glass optical fiber 7 and passive mid-far infrared chalcogenide glass optical fiber 8.
[0026] Among them, the excitation source 6 can use fiber lasers, titanium-doped sapphire lasers and semiconductor lasers in practical applications. For the realization of the effect, fiber lasers and titanium-doped sapphire lasers can be used at present, but semiconductor lasers are more ideal in the long run.
[0027] In this embodiment, the pulsed fiber laser 1 emits a laser with a certain repetition frequency, wavelength, and pulse width, which passes through the quartz photonic crystal fiber 3 to produce a supercontinuum laser output with a wavelength range near the near...
Embodiment 2
[0039] Such as figure 2 As shown, a mid-to-far infrared supercontinuum fiber laser includes a pulsed fiber laser 1, an amplification stage 2, a quartz photonic crystal fiber 3, a passive mid-infrared chalcogenide glass fiber 4, a filter 5, an excitation source 6, and a doped rare earth ion Chalcogenide glass fiber 7, passive mid-far infrared chalcogenide glass fiber 8 and focusing lens 9.
[0040] In this embodiment, the laser light with a certain repetition frequency, wavelength, and pulse width emitted by the pulsed fiber laser 1 is amplified by the power of the amplifier stage 2, and the amplified laser light passes through the quartz photonic crystal fiber 3 to generate laser light with a wavelength range of 1000~2300nm Supercontinuum output, the supercontinuum laser is focused and coupled to the passive mid-infrared chalcogenide glass fiber 4 through the focusing lens 9 to generate mid-infrared supercontinuum laser output with a wavelength of 2000~5500nm, the mid-infrare...
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Abstract
The invention discloses an intermediate / far infrared super-continuum spectrum fiber laser which relates to the field of laser photoelectrons. The intermediate / far infrared super-continuum spectrum fiber laser comprises a pulse fiber laser, a quartz photonic crystal fiber, a passive intermediate infrared chalcogenide glass fiber, a passive intermediate / far infrared chalcogenide glass fiber, a filter, an excitation source and a rare earth ion doped chalcogenide glass fiber, wherein a super-continuum spectrum laser is generated by the pulse laser emitted by the pulse fiber laser through the quartz photonic crystal fiber to excite the passive intermediate infrared chalcogenide glass fiber so as to generate an intermediate infrared super-continuum spectrum laser; the intermediate infrared super-continuum spectrum laser is filtered by the filter; the filtered intermediate infrared super-continuum spectrum laser is used as a seed resource laser and amplified through the rare earth ion doped chalcogenide glass fiber; and the amplified intermediate laser is used for exciting the passive intermediate / far infrared chalcogenide glass fiber so as to generate an intermediate / far infrared super-continuum spectrum laser with a wavelength of 5-14 micrometers. According to the intermediate / far infrared super-continuum spectrum fiber laser, the shortage of light sources of intermediate / far infrared lasers is solved and the output of the intermediate / far infrared super-continuum spectrum laser is realized.
Description
technical field [0001] The invention relates to the technical field of laser optoelectronics, in particular to a mid-to-far infrared supercontinuum fiber laser. Background technique [0002] Usually, the spectral segment with higher transmittance when sunlight passes through the atmosphere is called the atmospheric window. The spectral bands of the atmospheric window mainly include: microwave band (300~1GHz / 0.8~2.5cm), middle and far infrared band (8~14μm), mid-infrared band (3.5~5.5μm), near ultraviolet, visible light and near infrared band (0.3 ~1.3μm, 1.5~1.8μm). [0003] At present, solid-state lasers, semiconductor lasers, gas lasers and other types can easily achieve laser output in the visible and near-infrared bands (0.3~1.3μm, 1.5~1.8μm), which can be used in many fields such as national defense, industry, and medical treatment. Lasers located in the mid-infrared band of the atmospheric window wavelength of 3-5 μm and the far-infrared atmospheric window wavelength...
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