Effect of postgrowth processing technology and laser radiation parameters at wavelengths of 2091 and 1064 nm on the laser-induced damage threshold in ZnGeP2 single crystal

2021 ◽  
Vol 51 (4) ◽  
pp. 306-316
Author(s):  
N N Yudin ◽  
Oleg Leonidovich Antipov ◽  
A I Gribenyukov ◽  
Il'ya Dmitrievich Eranov ◽  
S N Podzyvalov ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Single Crystal ◽  
Damage Threshold ◽  
Processing Technology ◽  
Laser Induced Damage

Increasing the laser-induced damage threshold of single-crystal ZnGeP_2

2006 ◽  
Vol 23 (11) ◽  
pp. 2310 ◽  
Author(s):  
Kevin T. Zawilski ◽  
Scott D. Setzler ◽  
Peter G. Schunemann ◽  
Thomas M. Pollak
Keyword(s):  
Single Crystal ◽  
Damage Threshold ◽  
Laser Induced Damage

scholarly journals Investigation on the optical, spectral, electrical, mechanical, and laser damage threshold studies of bis (4-acetylanilinium) tetrachloridozincate (B4ATCZ) crystal

2021 ◽  
Author(s):  
M. Suriya ◽  
M. Manimaran ◽  
B. Milton Boaz ◽  
K. Sakthi Murugesan
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Damage Threshold ◽  
Threshold Value ◽  
Laser Damage Threshold ◽  
Bandgap Energy ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Orthorhombic Crystal ◽  
Laser Induced Damage

AbstractAn efficient semi-organic nonlinear optical bis (4-acetylanilinium) tetrachloridozincate [(C8H10NO)2 ZnCl4] (B4ATCZ) single crystal was synthesized and successfully grown by the slow evaporation method. The single-crystal X-ray diffraction data confirm that B4ATCZ crystallized into an orthorhombic crystal system (Cmca). The UV–Vis–NIR transmittance spectrum was taken to assess the optical transmission, cut-off wavelength, and bandgap energy. The TG–DSC investigation ensures that the B4ATCZ is stable up to 235 °C. The mechanical behavior of the B4ATCZ compound was determined by Vickers Microhardness analysis. The surface laser-induced damage threshold value of the grown B4ATCZ crystal was endowed to be 19.78 GW/cm2 on testing with 1064 nm Nd: YAG laser radiation. The positive photoconductive properties and charge transport mechanism of B4ATCZ crystal were analyzed through photoconductivity and dielectric studies. The electron excitation and lifetime measurements of the molecules in the B4ATCZ crystal were studied by fluorescence spectral analysis. The HOMO–LUMO analysis evidently interprets the occurrence of N–H⋯O and N–H⋯Cl intermolecular hydrogen bonds influencing the charge transfer in the system. The electrostatic potential surface reveals the possible sites for hydrogen bonding electrophilic and nucleophilic interactions. Third-order nonlinear optical activity evaluated by the Z-scan measurements indicates the self-focusing and reverse saturable absorption in the crystal. The aforesaid results affirm that the metal-organic B4ATCZ is a potential material for optoelectronic and nonlinear optical device applications.

scholarly journals Influence of the Characteristics of Multilayer Interference Antireflection Coatings Based on Nb, Si, and Al Oxides on the Laser-Induced Damage Threshold of ZnGeP2 Single Crystal

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1549
Author(s):  
Nikolai Nikolayevich Yudin ◽  
Mikhail Zinoviev ◽  
Vladislav Gladkiy ◽  
Evgeny Moskvichev ◽  
Igor Kinyaevsky ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Nonlinear Crystal ◽  
Ion Beam ◽  
Damage Threshold ◽  
Antireflection Coating ◽  
Coated Sample ◽  
Antireflection Coatings ◽  
Ion Beam Sputtering ◽  
Incident Laser Radiation ◽  
Laser Induced Damage

In this work, the effect of the defect structure and the parameters of antireflection interference coatings based on alternating layers of Nb2O5/Al2O3 and Nb2O5/SiO2 layers on the laser-induced damage threshold of ZGP crystals under the action of Ho:YAG laser radiation at a wavelength of 2.097 μm was determined. Coating deposition was carried out using the ion-beam sputtering method. The laser-induced damage threshold of the sample with a coating based on alternating layers Nb2O5 and SiO2 was W0d = 1.8 J/cm2. The laser-induced damage threshold of the coated sample based on alternating layers of Nb2O5 and Al2O3 was W0d = 2.35 J/cm2. It has been found that the presence of silicon conglomerates in an interference antireflection coating leads to a decrease in the laser-induced damage threshold of a nonlinear crystal due to local mechanical stresses and the scattering of incident laser radiation.

scholarly journals The Influence of Angstrom-Scale Roughness on the Laser-Induced Damage Threshold of Single-Crystal ZnGeP2

Crystals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 83
Author(s):  
Nikolai Yudin ◽  
Andrei Khudoley ◽  
Mikhail Zinoviev ◽  
Sergey Podzvalov ◽  
Elena Slyunko ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Single Crystal ◽  
Magnetic Particles ◽  
Damage Threshold ◽  
Structural Defects ◽  
Physical Limitations ◽  
Laser Induced Damage ◽  
Crystal Volume

Magnetorheological processing was applied to polish the working surfaces of single-crystal ZnGeP2, in which a non-aqueous liquid with the magnetic particles of carbonyl iron with the addition of nanodiamonds was used. Samples of a single-crystal ZnGeP2 with an Angstrom level of surface roughness were received. The use of magnetorheological polish allowed the more accurate characterization of the possible structural defects that emerged on the surface of a single crystal and had a size of ~0.5–1.5 μm. The laser-induced damage threshold (LIDT) value at the indicated orders of magnitude of the surface roughness parameters was determined not by the quality of polishing, but by the number of point depressions caused by the physical limitations of the structural configuration of the crystal volume. These results are in good agreement with the assumption made about a significant effect of the concentration of dislocations in a ZnGeP2 crystal on LIDT.

Key aspects ofl-threoninium picrate single crystal: an excellent organic nonlinear optical material with a high laser-induced damage threshold

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 56188-56199 ◽  
Author(s):  
Anuj Krishna ◽  
N. Vijayan ◽  
Shashikant Gupta ◽  
Kanika Thukral ◽  
V. Jayaramakrishnan ◽  
...  
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Damage Threshold ◽  
Optical Material ◽  
Nonlinear Optical Material ◽  
High Laser ◽  
Laser Induced Damage ◽  
Key Aspects

scholarly journals The Influence of the Angstrom-scale Roughness on the Laser-induced Damage Threshold of the ZnGeP2 Single Crystal

2021 ◽  
Author(s):  
Nikolai Yudin ◽  
Andrey Khudoley ◽  
Mikhail Zinoviev ◽  
Sergey Podzvalov ◽  
Elena Slyunko ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Single Crystal ◽  
Magnetic Particles ◽  
Damage Threshold ◽  
Structural Defects ◽  
Physical Limitations ◽  
Laser Induced Damage ◽  
Crystal Volume ◽  
Scale Roughness

Magnetorheological processing was applied to polish the working surfaces of the ZnGeP2 single crystal, in which a non-aqueous liquid with magnetic particles of carbonyl iron with the addition of nanodiamonds was used. Samples of a single crystal ZnGeP2 with an angstrom level of surface roughness were received. the use of MRP has allowed more accurately characterizing possible structural defects that have emerged on the surface of a single crystal and have a size of ~ 0.5-1.5 μm. the LIDT value at the indicated or-ders of magnitude of the surface roughness parameters is determined not by the quality of polishing, but by the number of point depressions caused by physical limitations of the structural configuration of the crystal volume. These results are in good agreement with the assumption made about a significant effect of the concentration of dislocations in a ZnGeP2 crystal on LIDT.

scholarly journals Synthesis and characterization of γ-glycine – a nonlinear optical single crystal for optoelectronic and photonic applications

2017 ◽  
Vol 35 (1) ◽  
pp. 140-150 ◽  
Author(s):  
A. Arputha Latha ◽  
M. Anbuchezhiyan ◽  
C. Charles Kanakam ◽  
K. Selvarani
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Title Compound ◽  
Mechanical Stability ◽  
Second Harmonic ◽  
Potassium Dihydrogen Phosphate ◽  
Damage Threshold ◽  
Dielectric Measurement ◽  
Dihydrogen Phosphate ◽  
Laser Induced Damage

AbstractA single crystal of gamma-glycine (GG), a polymorph of glycine, was synthesized by crystallization. The single crystal of GG was grown from an aqueous solution. The morphology of GG was studied in order to assess its growth facets. The good quality single crystals were subjected to X-ray diffraction studies to reveal their structure. The FT-IR spectral analysis was carried out to confirm the presence of expected functional groups. The UV-Vis analysis was done for GG single crystals to determine the optical transparency and band gap. Simultaneous TG-DTA analysis was employed to understand the thermal and physicochemical stability of the title compound. The mechanical stability and laser stability of GG single crystal were studied using Vickers microhardness test and laser induced damage threshold on different planes of the crystal to reveal its anisotropic nature. The dielectric measurement was carried out as a function of frequency and the results were discussed. The existence of second harmonic generation (SHG) of the title compound was confirmed by Kurtz-Perry powder technique. The SHG effective nonlinearity and particle size dependence of GG powder sample were compared with a standard reference material: potassium dihydrogen phosphate (KDP).

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