Picosecond laser source at 1 MHz with continuous tunability in the visible red band

Details Picosecond laser source at 1 MHz with continuous tunability in the visible red band Picosecond laser source at 1 MHz with continuous tunability in the visible red band

2006-10-10

arxiv.org/abs/physics/0610072v1

Optics Communications 220, pp. 187-192 (2003

Physics

Optics

Scientific paper

10.1016/S0030-4018(03)01405-6

We report the first demonstration to our knowledge of a continuously tunable picosecond laser operating around 1 MHz. The emission can be tuned from 640 to 685 nm and the repetition rate from 200 kHz to 1 MHz with a pulse duration of less than 200 ps. The system is based on a Nd:YVO4 passively Q-switched microchip laser providing a few tens of nJ per pulse. Two cascaded stages of amplification are then used to increase the pulse energy to several microJ . The frequency doubled radiation is then used to pump a periodically-poled-niobate-lithium (PPLN)-based optical parametric generator in an all-solid-state architecture. 20 nJ of tunable signal radiation are obtained. We also demonstrated 300-ps pulses generation in the UV (355 nm) at 1 MHz.

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