RFH D9 series Water cooled UV laser's power is 3w .Comparing with its kinds, D9 series UV laser features with rugged sealed cavity, extremely compact size, simple and robust, high stability, high efficiency, high reliability and excellent laser beam quality.Its compact design suggests no necessity in building big light path, which greatly reduces space and cost and makes it easy to be installed into UV laser marking machines. In addition, D9 series cavity structure has more stability and more excellent scalability, which means the same laser cavity can produce multi-power lasers , and the stability of different power ranges is greatly improved.