A Guide To MOPA Fiber
Master Oscillator Power Amplifier (MOPA)
The lasers are air cooled and are offered either as a compact OEM module or as a fully integrated IEC/CDRH compliant system incorporating an integrated power supply and control unit for easy laser installation and control. An even more compact conductively cooled version, without fans, is also available.
Is a family of diode-pumped
pulsed fiber lasers, which have been specifically designed to address laser
manufacturing requirements for solar cell production. More specifically, laser
scribing via ablation of the transparent conducting oxide (TCO) layer in the
P1 stage of the thin film solar panel patterning process.
Multiwave's MOPA-PV Series:
Optimized for shorter pulse operation to reduce micro-cracking and HAZ, and provides an excellent combination of high pulse energy and high peak power for P1 scribing. Laser pulses can be generated at pulse repetition frequencies set by the user anywhere from single-shot to 500 kHz, and the excellent beam quality with type.M2 ≈ 1.3 allows the Gaussian beam to focus to spot sizes with diameter < 30 μm.
Multiwave’s MOPA (Master Oscillator Power Amplifier)
Architecture allows pulse shape control, triggering, gating, equalization, ASE suppression and residual laser emission well beyond fiber-based Q-switched laser designs. The beam quality rivals the performance offered by sophisticated DPSS solid state lasers and, unlike DPSS lasers, it is not limited to a narrow operating range.
Short pulses (< 30 ns) reduces HAZ and microcracking
• High combined pulse energy and peak power optimized for P1 scribing, a
process with high pulse peak power threshold
• High beam quality (typ. M2 ≈ 1.3) allows the Gaussian beam to focus to
spot sizes with diameter < 30 μm • High pulse frequency to 500 kHz (from single-shot) for higher throughput • Pulse equalization of pulse energy ensures pulse-to-pulse repeatability which leads to consistent and precise scribe widths and depths • All-fiber design uses long-life single emitter diodes (>200,000 hr life)
• Lower capital and operating cost as compared to solid-state diode-pumped