Publications by authors named "Jonathan P Phillips"
We report on the successful demonstration of second and third harmonic conversion of a high pulse energy, high average power 1030 nm diode pumped Yb-doped yttrium aluminum garnet (Yb:YAG) nanosecond pulsed laser in a large aperture lithium triborate (LBO) crystal. We demonstrated generation of 59.7 J at 10 Hz (597 W) at 515 nm (second harmonic) and of 65.
View Article and Find Full Text PDFWe report on frequency doubling of high-energy, high-repetition-rate ns pulses from a cryogenically gas cooled, multi-slab Yb:YAG laser system, using a type-I phase-matched lithium triborate (LBO) crystal. Pulse energy of 4.3 J was extracted at 515 nm for a fundamental input of 5.
View Article and Find Full Text PDFArticle Synopsis
- This report investigates type-I phase-matched second harmonic generation (SHG) using DKDP, YCOB, and LBO crystals with a Yb:YAG laser operating at 1029.5 nm.
- DKDP showed a 45% efficiency, while YCOB and LBO achieved higher efficiencies of 50% and 65% respectively at the same fundamental intensity.
- LBO demonstrated the highest conversion efficiency of 82% at increased intensity, generating 5.6 J of output energy, while YCOB did not improve at this intensity; the report also includes theoretical temperature maps for potential higher energy operation.