NaSb 3 F 10 : A new second-order nonlinear optical crystal to be used in the IR region with very high laser damage threshod

Abstract

This paper reports the second-order nonlinear optical (NLO) property of NaSb3F10, a potential new NLO material in the infrared region. The compound exhibits a phase-matchable second harmonic generation (SHG) efficiency of about 3.2 times that of KH2PO4 based on the powder SHG measurement. A measurement indicates that its laser damage threshold is as high as about 1.3 GW/cm2, which is much higher than all those IR NLO crystals reported in the literature. It also shows excellent transparency in the range of 0.25–7.8 μm with relativity high thermal stability. Single crystal of the size 12×10×8 mm3 has been grown in aqueous solution by a slow evaporation technique.

Lead Mixed Oxyhalides Satisfying All Fundamental Requirements for High‐Performance Mid‐Infrared Nonlinear Optical Materials

“…[40] However,i ti su sually difficult to grow large single crystals with high quality for chalcogenides because of the harsh conditions and laborintensive processes.M eanwhile,h alides were proposed as another promising mid-IR NLO materials. [41] Af ew representative metal halides with wide IR transparent range and considerable LDT include Rb 2 CdBr 2 I 2 , [42] Cs 2 HgI 2 Cl 2 , [43] (Hg 6 P 3 )(In 2 Cl 9 ), [44] Hg 2 BrI 3 , [45] NaSb 3 F 10 , [46] HgBr 2 , [47] and K 2 SbF 2 Cl 3 . [48] Notably,s ome of the crystals can be grown in mild conditions via hydrothermal or solution methods.…”

Research progress on mid-IR nonlinear optical crystals with high laser damage threshold in China

“…8). The LDT value was determined to be 1.3 GW/cm 2 by a laser radiation at a wavelength 1.064 µm and the pulse of 8 ns [16]. This value is one order of magnitude higher than that of LiInS 2 (LiInS 2 = 0.1 GW/cm 2 ).…”

“…Due to the important applications of the mid-IR NLO crystals in optical communications, IR spectroscopy, and high-energy laser system, the research to find new NLO materials with high damage resistance to the incident laser beam together with relatively large NLO coefficient, wide transparent range in the mid-IR region, and good stability to the environment has become an urgent and challenging task in the field and thus has attracted great attention worldwide. Some good progress has been achieved in the last decade or so, for which the Chinese scientists have made a considerable contribution in both aspects: improving the crystal growth technique and exploring new strategy to search for new mid-IR NLO crystals [10][11][12][13][14][15][16][17][18][19]. This paper summarizes the recent research progress in China for mid-IR NLO crystals with high LDT.…”

Crystal growth and electronic structure of low-temperature phase SrMgF4

“…These crystals possess specific structural and bonding effects, nonlinear optical characteristics and a wide transparency window from the vacuum violet to mid-infrared range [7][8][9][10][11][12][13][14][15][16][17]. Moreover, fluorides are efficient hosts for rare-earth dopants and the materials are widely applied in the laser technique and creation of nanophotonical phosphors [18].…”

“…Moreover, fluorides are efficient hosts for rare-earth dopants and the materials are widely applied in the laser technique and creation of nanophotonical phosphors [18]. For the recent years, several nonlinear optical fluorides have been considered for frequency conversion in the infrared spectral range [7,8,11,17,[19][20][21].…”