4W 455nm permanent immersion laser with 20mm round beam

Description

This is an IP68-class laser that can be permanently immersed into a water or salt water. It can be used outdoor too. The beam is extra thick - 20mm in diameter. The beam has a round shape, homogeneous, almost top-hat intensity distribution. Its divergence is very low, the peak power can exceed 4.5W at central wavelength 455nm. The input voltage is 12-24V.