Growth and characterization of large KDP crystals for high power lasers

Maunier, C.; Bouchut, Philippe; Bouillet, Stéphane; Cabane, H.; Courchinoux, Roger; Defossez, P.; Poncetta, Jean-Christophe; Ferriou-Daurios, Nathalie

doi:10.1016/j.optmat.2006.11.019

Cited by 30 publications

(12 citation statements)

References 7 publications

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“…Inertial Confinement Fusion (ICF) laser system is consisted of thousands of optical components with strict demands of large dimension and high accuracy [7]. As frequency multiplication elements and Pockels cells, potassium dihydrogen phosphate (KH 2 PO 4 or KDP) crystal has been widely used in ICF project, and until now, it is still the most suitable nonlinear material due to its good growth quality and larger electro-optic coefficient [8,9]. Because KDP is soft and brittle, and is extremely easy to deliquesce, the traditional grinding or polishing are not suitable for processing this kind of material due to the edge collapsing and abrasive embedding.…”

Section: Introductionmentioning

confidence: 99%

Study on the optical performance and characterization method of texture on KH2PO4 surface processed by single point diamond turning

Chen

Cheng

et al. 2013

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Study on the optical performance and characterization method of texture on KH2PO4 surface processed by single point diamond turning

Chen

Cheng

et al. 2013

Applied Surface Science

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“…1 Good quality, large-sized crystals of KDP in pure as well as with suitable dopants or functional groups have been grown by various techniques for device applications. [2][3][4] Recently, the study on dual laser beam separation technology and crystallization behaviour of KDP was reported. 5,6 Materials with fast processing, data transmission, frequency doubling, fast and high data storage capacity and data retrieving are in high demand in the modern society and this has made it necessary to grow good quality single crystals with high NLO and unique optical properties by adding some suitable dopants or functional groups.…”

Section: Introductionmentioning

confidence: 99%

Bulk growth, structural, vibrational, crystalline perfection, optical and dielectric properties of L-threonine doped KDP single crystals grown by Sankaranarayanan-Ramasamy (SR) method

Shkir

Ganesh

AlFaify

et al. 2016

Materials Research Innovations

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In the present work, the authors have grown the bulk-sized single crystals of pure (Size ~ 45 × 10 × 10 mm 3 ) and first time L-threonine (LT)-doped (Size ~ 85 × 10 × 8 mm 3 ) KDP with high quality by Sankaranarayana-Ramasamy (SR) method in an aqueous solution at constant temperature. A remarkable enhancement in the growth rate was observed from 3.2 mm/day (pure) to 6 mm/day (LT doped), respectively. The crystal structure, lattice parameters and growth direction were confirmed by powder X-ray diffraction analysis. FT-IR study confirms the presence of L-Threonine doping in KDP. Further, the vibrational modes and surface morphology was studied by FT-Raman spectroscopy along with etching treatment and shows remarkable reduction of surface defects. The optical transparency of SR-grown KDP crystals was found to be enhanced from 76 to 88% due to LT doping. The optical band gap was calculated for both the crystals and found to be 5.68 and 5.53 eV. Crystalline perfection of the grown crystals was assessed by high-resolution X-ray diffraction, dielectric and wet chemical etching studies and found to be good. The obtained result shows that the grown crystals can be used for laser applications.

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“…Also, the rapid growth technique is developed to obtain single crystals from a supersaturated solution with high growth rates [10]. The drawback of this technique is a lack of material homogeneity originating from the appearance of impurities in the crystal growth, which causes the heterogeneity of final crystals and consequently influence the transmitted wavefront quality, the optical switch function and the frequency conversion efficiency [11].…”

Section: Introductionmentioning

confidence: 99%

Effects of EDTA additives on optical properties of rapidly grown KDP single crystals

Liu

Yang

Zhang

et al. 2015

J Mater Sci: Mater Electron

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Potassium dihydrogen orthophosphate (KDP) single crystals were grown by the 'point seed' rapid growth technique from aqueous solutions with the addition of ethylene diamine tetraacetic acid (EDTA). Influences of EDTA additives on phase, growth rate, transmittance, and laser damage threshold were studied carefully. X-ray diffraction patterns indicated that the EDTA additives benefit to the crystallinity of KDP crystals. Also, with the addition of EDTA in the growth solution, the growth rate of prismatic sector was accelerated and the dead zone was decreased. The transmittance spectra showed that EDTA additives had obvious influence on the ultraviolet transmittance, but did not influence the transmittance in visible light region. And the appropriate amount of EDTA additives decreased the laser damage threshold. The improvements of optical properties for these KDP single crystals related to the coordinate bonds between EDTA and anionic impurities.

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Growth and characterization of large KDP crystals for high power lasers

Cited by 30 publications

References 7 publications

Study on the optical performance and characterization method of texture on KH2PO4 surface processed by single point diamond turning

Study on the optical performance and characterization method of texture on KH2PO4 surface processed by single point diamond turning

Bulk growth, structural, vibrational, crystalline perfection, optical and dielectric properties of L-threonine doped KDP single crystals grown by Sankaranarayanan-Ramasamy (SR) method

Effects of EDTA additives on optical properties of rapidly grown KDP single crystals

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