639 nm
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Q-switched Red Laser (1)
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Red Diode Laser for Raman Spectroscopy at 639nm (1)
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638~644 nm Tunable Wavelength Red Laser (1)
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Fiber Coupled Laser System at 639 nm (2)
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High Stability Red Laser at 639 nm (4)
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Low Noise Red Laser at 639 nm (2)
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Red Line Laser at 639 nm (1)
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Single Longitudinal Mode Red Laser at 639 nm (4)