Laser damage tests of large flux-grown KTiOPO_4 crystals

Yankov, P.; Schumov, D; Nenov, A.T.; Monev, A

doi:10.1364/ol.18.001771

Cited by 18 publications

(4 citation statements)

References 11 publications

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“…The LAS crystal surface damaged by laser was demonstrated in Figure 3d. The damage threshold of LAS is 1.47 GW cm −2 at 1064 nm, 10 ns, which is comparable to some commercial NLO crystals, such as KDP (5.3 GW cm −2 at 1064 nm, 10 ns) [ 41 ] LiB 3 O 5 (>0.5 GW cm −2 at 1064 nm, 8 ns) [ 42 ] β‐BaB 2 O 4 (5 GW cm −2 at 1064 nm, 10 ns) [ 43 ] and KTiOPO 4 (1.5 GW cm −2 at 1064 nm, 11 ns) [ 44 ] indicating that LAS is suitable for high‐energy NLO applications.…”

Section: Resultsmentioning

confidence: 99%

A Ferroelectric Nonlinear Optical Crystal for Deep‐UV Quasi‐Phase‐Matching

Song,

Yu,

et al. 2023

Adv Funct Materials

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Phase matching is indispensable for high efficiency of second‐order nonlinear optical (NLO) crystals. Thousands of these crystals rely on birefringence phase matching, whereas only a few of them are quasi‐phase matching without the restriction of birefringence. Herein, using oriented seeds inch‐sized LiNH4SO4 (LAS) single crystals are successfully grown. LAS is NLO‐active with a very short deep‐UV absorption edge of 171 nm and high laser damage threshold up to 1.47 GW cm−2 at 1064 nm, 10 ns, but its birefringence is merely 0.0078@532 nm, which is too small to realize birefringence phase matching in deep‐UV region. Fortunately, P−E hysteresis loop, variable‐temperature NLO tests, and ferroelectric domain observations confirm that LAS is ferroelectric. Furthermore, LAS exhibits small refractive index dispersion resulting in a relatively long periodic length of 1.4 µm and its single domain structure can be easily obtained by electrical poling. These attributes make LAS a scarce NLO candidate for deep‐UV quasi‐phase matching. This work highlights the longly overlooked potential of sulfates and provides new opportunities for deep‐UV NLO materials.

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Section: Resultsmentioning

confidence: 99%

A Ferroelectric Nonlinear Optical Crystal for Deep‐UV Quasi‐Phase‐Matching

Song,

Yu,

et al. 2023

Adv Funct Materials

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“…Thus, the calculated (100) and (001) surface laser damage threshold is all as high as 3.32 GW·cm –2 . As compared with some famous commercial NLO crystals (Table ), for example, LiB 3 O 5 (>0.5 GW·cm –2 at 1064 nm and 8 ns), β-BaB 2 O 4 (2.6 GW·cm –2 at 1064 nm and 10 ns), KTiOPO 4 (1.5–2.2 GW·cm –2 at 1064 nm and 11 ns), the KBLABF crystal exhibits a comparable surface laser damage threshold, which indicates that KBLABF is suitable for high-power NLO applications.…”

Section: Resultsmentioning

confidence: 99%

Physical Properties of a Promising Nonlinear Optical Crystal K₃Ba₃Li₂Al₄B₆O₂₀F

Zhao

et al. 2018

Crystal Growth & Design

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Beryllium-free nonlinear optical (NLO) crystal K3Ba3Li2Al4B6O20F (KBLABF) is a newly reported promising candidate in the generation of the significant UV coherent light. A 17 × 12 × 8 mm3 bulk single crystal is successfully grown with an optimized flux molar ratio. The crystal specific heat increases from 0.65 J·g–1·°C–1 to 0.96 J·g–1·°C–1 with the increasing temperature. Meanwhile, the a-direction thermal conductivity of KBLABF is 1.11 W·m–1·K–1 at 25 °C, which is also equivalent to that of the famous NLO crystal β-BaB2O4 (1.25 W·m–1·K–1). The KBLABF crystal has moderate Vickers hardness along the a-axis and c-axis (165.1 HV0.1 and 257.7 HV0.1, respectively), which indicates it is easy to be cut and polished. Remarkably, the laser damage threshold of KBLABF is 3.32 GW·cm–2 (1064 nm, 8 ns), which even exceeds those of some famous commercial NLO crystals. This result demonstrates that KBLABF is suitable for high-power NLO applications. This work will establish the foundation for the future NLO applications of the KBLABF crystal.

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“…The development of the theories of crystal growth has thrown more light on the understanding of crystal growth phenomena. Compared with inorganic NLO materials, organic materials may fulfill many of these requirements, but there are also some drawbacks with organic NLO materials such as environmental stability, poor chemical and mechanical stability, red-shift of the cut-off wavelength, low laser damage thresholds and poor phase matching properties [5][6][7][8][9][10][11][12]. In order to overcome these drawbacks and improve the properties, the growth of semi-organic crystals has nowadays come into prominence.…”

Section: Introductionmentioning

confidence: 99%

HUMO-LUMO Studies on Methyl Orange Doped ZTS Crystals for Laser Applications

Suresh¹,

Kumar²,

Ambalavanan³

et al. 2018

IJERMT

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Abstract:inc Thiourea Sulphate (ZTS), crystal is a magnificent metal natural compound, which consolidates the upsides of both natural and inorganic materials when contrasted and other customary non-linear optical materials and in this way can be utilized as a part of a more extensive scope of uses. Late endeavors at delivering new recurrence transformation materials have concentrated essentially on expanding the extent of the NLO properties that can recurrence twofold low pinnacle control sources, for example, diode lasers. The thermo gravimetric examination (TGA) and differential warm investigation (DTA) were completed utilizing Seiko warm analyzer at warming rate 20°C/min in air to decide the warm dependability of the compound. ZTS crystals were developed by moderate cooling procedure. This empowers the development of mass gems along all the three bearings at an ideal pH. FTIR examines demonstrate that in the spectra of ZTS there is a move in the recurrence band in the low-recurrence district which uncovers that thiourea shapes sulfur-to-zinc securities in the ZTS crystals. The stability and charge delocalization of the molecule were also studied by natural bond orbital (NBO) analysis. The HOMO-LUMO energies describe the charge transfer takes place within the molecule. Molecular electrostatic potential has been analyzed. The developments try in extensive scale with this enhanced pH qualities is required to yield mass crystal appropriate for laser combination tests and SHG device applications.

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Laser damage tests of large flux-grown KTiOPO_4 crystals

Cited by 18 publications

References 11 publications

A Ferroelectric Nonlinear Optical Crystal for Deep‐UV Quasi‐Phase‐Matching

A Ferroelectric Nonlinear Optical Crystal for Deep‐UV Quasi‐Phase‐Matching

Physical Properties of a Promising Nonlinear Optical Crystal K₃Ba₃Li₂Al₄B₆O₂₀F

HUMO-LUMO Studies on Methyl Orange Doped ZTS Crystals for Laser Applications

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Laser damage tests of large flux-grown KTiOPO_4 crystals

Cited by 18 publications

References 11 publications

A Ferroelectric Nonlinear Optical Crystal for Deep‐UV Quasi‐Phase‐Matching

A Ferroelectric Nonlinear Optical Crystal for Deep‐UV Quasi‐Phase‐Matching

Physical Properties of a Promising Nonlinear Optical Crystal K3Ba3Li2Al4B6O20F

HUMO-LUMO Studies on Methyl Orange Doped ZTS Crystals for Laser Applications

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Product

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Physical Properties of a Promising Nonlinear Optical Crystal K₃Ba₃Li₂Al₄B₆O₂₀F