Efficient generation of continuously tunable coherent radiation in the 2460-2650-Å spectral range

Continuously tunable coherent radiation in the 2460- 2650-Å spectral range has been achieved by second harmonic generation (SHG) of a dye laser in a 90° phase-matched ADP crystal, temperature tuned between-116°C and 52°C. The 8.4-percent conversion efficiency obtained at a fundamental power of 9.6 kW is approximately 5 times larger than that reported earlier for SHG at these wavelengths.