Optimization of single-layer sol-gel antireflection coatings on potassium dihydrogen phosphate crystals in quadrature geometry for second-harmonic conversion of high-power Nd:glass lasers

2010 ◽  
Vol 49 (9) ◽  
pp. 091010 ◽  
Author(s):  
Rakesh Pareek
Keyword(s):  
High Power ◽  
Second Harmonic ◽  
Sol Gel ◽  
Potassium Dihydrogen Phosphate ◽  
Single Layer ◽  
Dihydrogen Phosphate ◽  
Antireflection Coatings ◽  
Potassium Dihydrogen ◽  
Harmonic Conversion

INVESTIGATION ON THE PHYSICOCHEMICAL PROPERTIES OF NONLINEAR OPTICAL SINGLE CRYSTAL: 2-NAPHTHALENOL

2009 ◽  
Vol 23 (09) ◽  
pp. 1221-1227
Author(s):  
K. SELVARAJU ◽  
K. KIRUBAVATHI ◽  
S. KUMARARAMAN
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Potassium Dihydrogen Phosphate ◽  
Wavelength Region ◽  
Dihydrogen Phosphate ◽  
X Ray Diffraction ◽  
Second Harmonic Generation Efficiency ◽  
Growth Technique ◽  
Potassium Dihydrogen

Single crystals of 2-Naphthalenol (2N), new organic nonlinear optical (NLO) material, have been grown by slow evaporation solution growth technique at room temperature. The crystal system has been confirmed from the single crystal X-ray diffraction analysis. The functional groups were identified using FTIR spectroscopy. UV-vis-NIR spectrum showed absence of absorption in the wavelength region 400–1400 nm. The second harmonic generation efficiency is two times higher than that of standard potassium dihydrogen phosphate (KDP).

scholarly journals Crystal Structure of L-Histidinium 2-Nitrobenzoate

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Subramanian Natarajan ◽  
Kalimuthu Moovendaran ◽  
Jeyaperumal Kalyana Sundar ◽  
Krishnan Ravikumar
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Potassium Dihydrogen Phosphate ◽  
Dihydrogen Phosphate ◽  
X Ray Diffraction ◽  
Potassium Dihydrogen ◽  
X Ray ◽  
Shg Efficiency

A new nonlinear optical organic compound, namely, L-histidinium 2-nitrobenzoate (abbreviated as LH2NB (I); ([C6H10N3O2]+ [C7H4NO4]−)), was synthesized. The molecular structure of LH2NB (I) was elucidated using single crystal X-ray diffraction technique. The second harmonic generation (SHG) efficiency of this compound is about two times that of the standard potassium dihydrogen phosphate crystals.

scholarly journals Single-Crystalline Fibers of Deuterated Potassium Dihydrogen Phosphate

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 511
Author(s):  
Xueni Liu ◽  
Yan Ren ◽  
Cheng Qian Zhang ◽  
Bo Wang ◽  
Sheng Qing Xia
Keyword(s):  
Second Harmonic ◽  
Potassium Dihydrogen Phosphate ◽  
Guided Wave ◽  
Supersaturated Solution ◽  
Deuterium Content ◽  
Dihydrogen Phosphate ◽  
X Ray Diffraction ◽  
Potassium Dihydrogen ◽  
Single Crystalline ◽  
Tetragonal Crystal

Single-crystalline fibers have distinct structures and optical properties comparing with the bulk crystals. In this article, two types of single-crystalline fibers of deuterated potassium dihydrogen phosphate (K(H1−xDx)2PO4, DKDP) are obtained by rapid growth in room-temperature supersaturated solution. X-ray diffraction analysis reveals that these DKDP single-crystalline fibers belong to tetragonal (I-42d) and monoclinic (P21/c) phases, respectively. The crystal structure of the tetragonal DKDP single-crystalline fiber is identical to that of the bulk DKDP tetragonal crystal reported. The lattice parameters of the monoclinic DKDP fiber (with the deuterium content of 55%) are a = 14.6571 Å, b = 4.5187 Å, c = 18.6962 Å, and β = 108.030°, which is a new crystal phase of DKDP. The monoclinic DKDP single-crystalline fiber is metastable at the present experimental condition and readily transit to the corresponding DKDP tetragonal phase in solution and in solid by grinding. The optical experiment shows that the highly deuterated tetragonal DKDP single-crystalline fiber possesses excellent optical guided-wave and effective second-harmonic generation properties. DKDP single-crystalline fibers are expected to be the suitable candidates for fabrication of the miniaturized nonlinear optical devices.

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