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

Sebastien Forget·Francois Balembois·Gaelle Lucas-Leclin·Patrick Georges
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Abstract

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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Sebastien Forget, Francois Balembois, Gaelle Lucas-Leclin, Patrick Georges. 2006-10-10. Picosecond laser source at 1 MHz with continuous tunability in the visible red band. https://doi.org/10.1016/s0030-4018(03)01405-6

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