The new AVIA 355-7 from Coherent is a q-switched, frequency-tripled, solid-state laser delivering more than 7W of average power at 355nm, in a package designed to maximise reliability for a minimum cost of ownership. The highest average power is achieved at repetition rates near 60kHz, but the laser can be operated at pulse rates as high as 100kHz, enabling very high throughput micromachining processes.
Pulse width is less than 30ns to minimise peripheral thermal effects in these applications. The AVIA 355-7 also delivers superior beam quality and high pulse-to-pulse stability. Both OEMs and end users will benefit from the high product reliability and two-year warranty of this fully RoHS-compliant lasers.
New features include an automated crystal shifter, which results in uniform power output over the life of the laser, and an improved THG crystal life of 60,000 hours. The AVIA 355-7 also includes several automated stabilisation mechanisms (first-pulse suppression, ThermEQ, PulseEQ, and PulseTrack) to ensure total control of the pulse energy. In addition, the laser’s unique Posilock beam position sensor and feedback loop results in very high beam-pointing stability.