Polarization switching in a mid-infrared Er:YAlO laser.

We report on a polarization-resolved study of mid-infrared emission properties of Er-doped orthorhombic yttrium aluminum perovskite YAlO single crystal. For the I→ I Er transition, the stimulated emission cross section is 0.20 × 10cm at 2919 nm for light polarization E ‖ c.

Laser performance of high optical quality 4 at.% Pr: SrLaMgAlO (Pr:ASL) single crystals.

In this work, we present the visible laser performance of improved optical quality Czochralski-grown 4 at.% Pr-doped SrLaMgAlO (Pr:ASL) single crystals in the deep red (726 nm), the red (645 nm) and the orange (620 nm) range using two different pumping sources. Using a high beam quality frequency doubled Ti:sapphire laser with 1 W output power as pump source, deep red laser emission was reached at a wavelength of 726 nm with 40 mW of output power and a laser threshold of 86 mW.

High peak-power near-MW laser pulses by third harmonic generation at 355 nm in Ca(BO)F nonlinear single crystals.

In this work, the performance of Ca(BO)F (CBF) single crystals was investigated for the third harmonic generation at 355 nm. A high energy conversion efficiency of 16.9% at 355 nm was reached using a two-conversion-stage setup.