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Laser diode-based NIR light source: (a) Schematics of the NIR light source. Note the wavelength modules composed of one laser diode, a TEC with its heatsink, and an FC coupler. The wavelength modules are combined through a 12-to-1 fiber bundle. (b) Picture of the actual NIR laser light source with the top cover removed. Note the wavelength modules and the fiber bundle.
