A compact picosecond all-room-temperature orange-to-red tunable laser source in the spectral region between 600 nm and 627 nm is demonstrated. The tunable radiation is obtained by second harmonic generation in a periodically-poled potassium titanyl phosphate (PPKTP) multimode waveguide using a tunable quantum-dot external-cavity mode-locked laser. The maximum second harmonic output peak power of 3.91 mW at 613 nm is achieved for 85.94 mW of launched pump peak power at 1226 nm, resulting in conversion efficiency of 4.55 %.
- Harmonic generation and mixing
- laser, pulsed
- semiconductor lasers
- Mode-locked lasers
- lasers, tunable