Infrared lasers are not as bright as green or blue lasers, most of the infrared lasers are invisible. The red laser has a wavelength of 650nm, and infrared laser are 780nm IR laser, 808nm IR laser, 980nm IR laser, 1064 Far Infrared FIR laser. IR laser flashlight are those IR laser with flashlight shapes, they have higher output power.
IR Lasers in Night Vision Goggles NVG:
980nm IR can be seen in standard Gen3 NVG | Photonis 4G NVG .
1064nmnm IR can not be seen in standard Gen3 NVG , but visible in Photonis 4G NVG .
Some infrared lasers are used in laser sensors that can measure depth and width at high speed. 808nm laser can be used for computer-controlled heating of a specimen in vacuum. The 808nm lasers will produce lots of heat, you just need to point the laser to a specimen.Low power vacuum laser heater , high power laser heater.