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Second harmonic generation in Na3Gd2(BO3)3 crystals

✍ Scribed by W. W. Zhou; R. Z. Zhuang; W. Zhao; G. F. Wang; L. Z. Zhang; J. G. Ma; X. Bao; F. W. Wang; Y. H. Chen

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
176 KB
Volume
46
Category
Article
ISSN
0232-1300

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✦ Synopsis

top seeded solution growth, borates, Na 3 Gd 2 (BO 3 ) 3 , nonlinear optical materials. Na 3 Gd 2 (BO 3 ) 3 crystals with dimensions up to 22 Γ— 20 Γ— 5 mm 3 has been grown from NaBO 2 flux by the topseeded solution growth (TSSG) method for the first time. Differential scanning calorimetry (DSC) result shows that Na 3 Gd 2 (BO 3 ) 3 melts incongruently. The infrared spectrum indicates that Na 3 Gd 2 (BO 3 ) 3 contains characteristic triangular [BO 3 ] 3-groups responsible for the nonlinear optical effect. For the as-grown crystal, the transmittance exceeds 80% in the wavelength range of 315 nm to 2670 nm, and the UV cutoff wavelength is 207 nm. The damage threshold is 0.47 GW cm -2 at 1064 nm. Moreover, Na 3 Gd 2 (BO 3 ) 3 crystal exhibits an optical second harmonic generation effect which is 1.3 times as large as that of KH 2 PO 4 (KDP).

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