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Highly efficient periodically poled KTP-isomorphs with large apertures and extreme domain aspect-ratios
KTH, School of Engineering Sciences (SCI), Applied Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics.
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2018 (English)In: Nonlinear Frequency Generation and Conversion: Materials and Devices XVII, SPIE - International Society for Optical Engineering, 2018, Vol. 10516, article id 105160WConference paper, Published paper (Refereed)
Abstract [en]

Since the early 1990's, a substantial effort has been devoted to the development of quasi-phased-matched (QPM) nonlinear devices, not only in ferroelectric oxides like LiNbO3, LiTaO3 and KTiOPO4 (KTP), but also in semiconductors as GaAs, and GaP. The technology to implement QPM structures in ferroelectric oxides has by now matured enough to satisfy the most basic frequency-conversion schemes without substantial modification of the poling procedures. Here, we present a qualitative leap in periodic poling techniques that allows us to demonstrate devices and frequency conversion schemes that were deemed unfeasible just a few years ago. Thanks to our short-pulse poling and coercive-field engineering techniques, we are able to demonstrate large aperture (5 mm) periodically poled Rb-doped KTP devices with a highly-uniform conversion efficiency over the whole aperture. These devices allow parametric conversion with energies larger than 60 mJ. Moreover, by employing our coercive-field engineering technique we fabricate highlyefficient sub-μm periodically poled devices, with periodicities as short as 500 nm, uniform over 1 mm-Thick crystals, which allow us to realize mirrorless optical parametric oscillators with counter-propagating signal and idler waves. These novel devices present unique spectral and tuning properties, superior to those of conventional OPOs. Furthermore, our techniques are compatible with KTA, a KTP isomorph with extended transparency in the mid-IR range. We demonstrate that our highly-efficient PPKTA is superior both for mid-IR and for green light generation-as a result of improved transmission properties in the visible range. Our KTP-isomorph poling techniques leading to highly-efficient QPM devices will be presented. Their optical performance and attractive damage thresholds will be discussed.

Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2018. Vol. 10516, article id 105160W
Series
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X ; 10516
Keywords [en]
Counter-propagating interactions, KTP isomorphs, Large-Aperture, MOPO, Periodic poling, QPM devices
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Identifiers
URN: urn:nbn:se:kth:diva-229334DOI: 10.1117/12.2288174ISI: 000454223000018Scopus ID: 2-s2.0-85047338956ISBN: 9781510615175 (print)OAI: oai:DiVA.org:kth-229334DiVA, id: diva2:1213058
Conference
Nonlinear Frequency Generation and Conversion: Materials and Devices XVII 2018; San Francisco; United States; 29 January 2018 through 31 January 2018
Note

QC 20180604

Available from: 2018-06-04 Created: 2018-06-04 Last updated: 2019-04-25Bibliographically approved

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Viotti, Anne-LiseLiljestrand, CharlotteLaurell, Fredrik

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Canalias, Carlota CanaliasZukauskas, AndriusTjörnhamman, StaffanViotti, Anne-LiseLiljestrand, CharlottePasiskevicius, ValdasLaurell, Fredrik
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