研究目的
Demonstrating a diode-pumped solid-state laser directly emitting continuous-wave, single-longitudinal mode output at 640-nm with a c-cut praseodymium-doped yttrium lithium fluoride (Pr:YLF) crystal for the first time.
研究成果
The study successfully demonstrated a 640-nm SLM cw laser using a c-cut Pr:YLF crystal, achieving a maximum output power of 403 mW with a slope efficiency of 26.8%. The laser exhibited a spectral linewidth of 150 MHz and excellent beam quality, confirming TEM00 single-transverse-mode operation.
研究不足
The technical constraints include the need for precise temperature control and alignment to achieve SLM operation, and the potential for further output power enhancement and noise reduction.
1：Experimental Design and Method Selection:
Utilized a twisted-mode cavity scheme with two quarter-wave plates (QWPs) and one Brewster plate to achieve SLM operation.
2：Sample Selection and Data Sources:
Used a 10-mm-thick Pr:YLF crystal with a Pr3+ doping concentration of
3：5 at.% and an InGaN blue LD emitting at 441 nm as the pump source. List of Experimental Equipment and Materials:
Included a Peltier heat dissipation component, aspherical lens, cylindrical lens pair, plano-convex focal lens, and various optical components from Thorlabs Inc.
4：Experimental Procedures and Operational Workflow:
Focused on achieving maximal mode-matching efficiency by setting the effective cavity length to ~94 mm and characterized the laser's output power, spectrum, and beam quality.
5：Data Analysis Methods:
Measured the emission spectrum linewidth with an optical spectrum analyzer and a scanning Fabry-Perot interferometer, and analyzed the beam quality with a Spiricon M2-200 beam quality analyzer.
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Brewster polarizer
BW0601
Thorlabs Inc.
Part of the twisted-mode cavity
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Optical spectrum analyzer
AQ6373B
Yokogawa
Measurement of the emission spectrum
立即获取同款设备
-
Scanning Fabry-Perot interferometer
SA210-5B
Thorlabs Inc.
Observation of the output spectrum
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Pr:YLF crystal
c-cut
Unioriental Inc.
Gain medium for the laser
暂无现货
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InGaN blue LD
Nichia Inc.
Pump source
暂无现货
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Peltier heat dissipation component
HP-199-1.4-0.8
TETech Inc.
Temperature control for the crystal
暂无现货
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Aspherical lens
MDTP OPTICS Inc.
Collimation of the pump beam
暂无现货
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Quarter-wave plates
Thorlabs Inc.
Part of the twisted-mode cavity
暂无现货
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Beam quality analyzer
M2-200
Spiricon
Measurement of the beam quality
暂无现货
预约到货通知
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