Q-Switched and Mode-Locked NdCr:YAG Ceramic Pulse Laser

Abstract EN

A mode-locked and Q-switched short pulse laser using the Nd3+/Cr3+:YAG ceramic has been constructed with a SESAM and Cr4+:YAG crystal optical switch based on excite state absorption (ESA).

Laser oscillations of the pulse laser were observed experimentally.

The Nd/Cr:YAG ceramic laser has a high conversion efficiency from white light (such as lamp light or solar light) to the laser.

The Nd/Cr:YAG ceramic has a higher laser gain than the Nd:YAG laser for the same pumping power.

The laser oscillation can be obtained very easily.

A single-mode-locked laser pulse with fast modulation on the order of 100 ps was obtained in some pump power regimes when using the Cr4+:YAG crystal.

The obtained pulse duration of the short pulse was a few hundred ps.

A maximum peak power of 60 kW was obtained when using a SESAM.

The same level of peak power (60 kW) was also obtained when using the Cr4+:YAG crystal.