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Laser ModulesThorlabs offers compact laser modules equipped with a USB connector, phono jack, or bare wire leads. Each USB-equipped laser module has collimated output at 520 or 635 nm, an on/off switch, and a built-in highly attenuating electrical filter to eliminate noise in the laser output, regardless of the power supply used. The phono-jack-equipped laser modules are available with collimated or adjustable-focus output in the visible or NIR. Also available are turnkey laser diode modules that emit at visible or NIR wavelengths. In addition, we offer a handheld laser source with 635 nm output and a rechargeable battery.