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RESEARCH PRODUCT
Continuous-wave, double-pass second-harmonic generation with 60% efficiency in a single MgO:PPSLT crystal
Daniel KolbeM. StappelJochen Walzsubject
Materials sciencebusiness.industryEnergy conversion efficiencyPotassium titanyl phosphateSecond-harmonic generationAtomic and Molecular Physics and Opticschemistry.chemical_compoundOpticschemistryFiber laserLithium tantalateHarmonicOptoelectronicsContinuous waveLaser beam qualitybusinessdescription
We present a double-pass scheme for high-efficiency, high-power, second-harmonic generation (SHG) in a single MgO-doped periodically poled stoichiometric lithium tantalate (MgO:PPSLT) crystal. The device is pumped by a single-frequency, continuous-wave fiber amplifier laser system at a wavelength of 1091 nm. For the double-pass scheme, a conversion efficiency of 60% and a harmonic power of 12.8 W at a wavelength of 545.5 nm with a high beam quality of (M2<1.2) is achieved. Compared to single-pass SHG, a double-pass enhancement factor of more than two is observed at the highest fundamental pump power.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-07-01 | Optics Letters |