Coherent has launched the Avia 355-5, a frequency tripled, diode-pumped, solid-state laser. The laser offers economical performance for cost-sensitive micromachining tasks such as scribing sapphire substrates used in the fabrication of GaN LEDs. It is a Q-switched Nd:YVO4 laser that delivers 5W of 355nm output at 50kHz, and is suitable for operation at repetition rates of up to 150kHz. Its combination of high repetition rate and short pulse length (<20nsec at 5W) enables high throughput processing with minimal heat affected zone (HAZ).
The Avia 355-5 is a cost effective, compact, OEM product that offers many of the same features found on more powerful Avia models. Signature Avia features of ThermEQ, PulseEQ, and PulseTrack enable precise control of the delivered pulse energy allowing the OEM to define and optimise the laser process. The laser also has an automated harmonic crystal shifter to maintain constant output power for >20,000 hours thereby reducing the cost of ownership. In addition, the laser's Posilock beam position sensor and feedback loop results in high beam position stability over the life of the laser.
The Avia 355-5 has been designed for easy integration with a laser head measuring 491 x 216 x 141mm. The laser also delivers enhanced reliability and ease of maintenance through the use of a highly efficient single pump diode module that is field replaceable.