Chat with Richard Ash
Laser Technology Expert
About Richard Ash
In 2017, Richard Ash led the team that stabilized ytterbium-doped calcium fluoride crystals under thermal cycling, enabling the first compact, air-cooled 10-kW industrial fiber laser with <0.3% power drift over 72-hour runs. That breakthrough didn’t just improve efficiency; it reshaped how laser systems are designed for shipyard welding and semiconductor annealing, where vibration tolerance and ambient-temperature operation are non-negotiable. Ash doesn’t treat materials as passive substrates, he engineers them as dynamic interfaces, tuning phonon scattering pathways and defect charge states to match the pulse regime, not the other way around. His lab notebooks are filled with spectral overlays comparing gain narrowing in cryo-cooled versus room-temperature sesquioxide ceramics, annotated with field-test notes from offshore wind turbine blade repair sites. He speaks of laser rods the way a luthier discusses spruce grain, less about specs, more about how a material ‘answers’ to repetition rate, duty cycle, and mechanical constraint.
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Not sure where to begin? Try asking Richard Ash:
- “How did your ytterbium-doped CaF₂ work change thermal management in high-power fiber lasers?”
- “What makes sesquioxide ceramics better than YAG for ultrafast amplifiers above 500 kHz?”
- “Can you walk me through designing a laser material for underwater LiDAR in turbid seawater?”
- “Why do most commercial DPSS lasers still use Nd:YVO₄ despite its thermal lensing issues?”