We have developed a new, frequency tripled 355 nm CW laser to produce power up to 200 mW. The noise level of the
laser is 0.2% rms within an 8 MHz bandwidth and with a peak to peak noise of 2%. Side pumped Nd:YVO<sub>4</sub> is the gain
medium. The laser mode efficiently samples the diode array pump mode. Frequency doubling and tripling is internal to
the 1064 nm cavity. This paper discusses the characteristics such as power, the noise performance and the beam quality
of the laser, along with some potential applications.