Second optical harmonic near the surface of ferroelectric photonic crystals and photon traps

被引：6

作者：

Voinov, Yu P. ^{[1
]}

Gorelik, V. S. ^{[1
]}

Zaitsev, K. I. ^{[2
]}

Zlobina, L. I. ^{[1
]}

Sverbil', P. P. ^{[1
]}

Yurchenko, S. O. ^{[2
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

[2] Bauman Moscow State Tech Univ, Moscow 105005, Russia

来源：

PHYSICS OF THE SOLID STATE | 2015年 / 57卷 / 03期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

ANOMALOUS 2ND-HARMONIC GENERATION; BATIO3; NANOPARTICLES; ORDER;

D O I：

10.1134/S106378341503035X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

This paper reports on the results of experimental investigations of the generation of the second optical harmonic localized in a thin subsurface layer of ferroelectric photonic crystals and photon traps. To excite the second optical harmonic, a KGW: Yb solid-state pulsed-periodic laser generating the radiation with a wavelength of 1026 nm in a form of pulses similar to 10(-13) s long with a repetition frequency of 200 kHz at the average power of 0.1-3.5 W and power density of similar to 10(9)-10(12) W/cm(2) in a spot less than 100 mu m in diameter focused near the surface was used. Ferroelectrics, notably, barium titanate or sodium nitrite, were introduced into the pores between SiO2 nanoglobules. It is established that the maximal conversion efficiency of the exciting radiation into the second optical harmonic was several percents. The generation characteristics of the second optical harmonic near the surface of photonic crystals filled with ferroelectrics are compared with the generation of the second optical harmonic in ferroelectric photon traps of barium titanate ceramics and sodium nitrite microcrystals.

引用

页码：453 / 459

页数：7

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