研究目的
Demonstration of a spontaneous emission fiber source operating in the mid-infrared (MIR) wavelength range from 3.5 to 8 μm at output power levels of at least 1 mW, using Pr3+-doped selenide chalcogenide glass fiber pumped with commercially available laser diodes.
研究成果
The study successfully demonstrated a Pr3+-doped selenide chalcogenide glass fiber as a spontaneous emission source in the MIR range of 3.5 to 8 μm with an output power of at least 1 mW. This represents a significant step towards the development of MIR fiber lasers operating beyond 4 μm, with potential applications in various fields including biology, medicine, and environmental monitoring.
研究不足
The study was limited by the pump power used to avoid damage to the fiber sample, and the efficiency of the MIR emission was relatively low, with only a small fraction of the pump power converted into MIR light.
1：Experimental Design and Method Selection:
The study involved the use of Pr3+-doped selenide chalcogenide glass fibers pumped with laser diodes at
2：470 μm, 511 μm, and 690 μm to achieve spontaneous emission in the MIR range. Sample Selection and Data Sources:
A 1000 ppmw Pr3+-doped Ge-As-Ga-Se glass fiber approximately 450 μm in diameter and 70 mm long was used.
3：List of Experimental Equipment and Materials:
Laser diodes (SemiNex 4PN-127, SemiNex 4-PN-109, QPC Laser PR-6017-0000), black diamond lens, germanium aspheric lenses, long-pass filters, monochromator, MCT detector, lock-in amplifier, and thermal power meter.
4：Experimental Procedures and Operational Workflow:
The fiber was pumped with laser diodes, and the output power and photoluminescence spectra were measured using a combination of lenses, filters, and detectors.
5：Data Analysis Methods:
The output power and photoluminescence spectra were analyzed to determine the efficiency and spectral characteristics of the MIR emission.
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SemiNex 4PN-127
4PN-127
SemiNex
Pumping the Pr3+-doped selenide chalcogenide glass fiber at 1.47 μm.
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SemiNex 4-PN-109
4-PN-109
SemiNex
Pumping the Pr3+-doped selenide chalcogenide glass fiber at 1.511 μm.
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QPC Laser PR-6017-0000
PR-6017-0000
QPC Laser
Pumping the Pr3+-doped selenide chalcogenide glass fiber at 1.69 μm.
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thermal power meter
S401C
Thorlabs
Measuring the output power after passage through a long-pass filter.
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black diamond lens
Thorlabs
Collimating the output from the fiber end.
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germanium aspheric lens
Edmund Optics
Focusing the beam after collimation.
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long-pass filter
Spectrogon
Filtering out wavelengths below the cut-on wavelength.
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MCT detector
PVI-4TE-8
Vigo System
Detecting the photoluminescence signal in the spectral region spanning 3.0 to 9 μm.
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lock-in amplifier
Scitec Instruments Inc.
Reducing thermal background noise by using a reference signal from the chopped pump beam.
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