Crystal growth and characterization of new quaternary chalcogenide nonlinear crystals for the mid-IR: BaGa_2GeS_6 and BaGa_2GeSe_6

Badikov, Valeriy; Badikov, Dmitrii; Laptev, V. B.; Mitin, K. V.; Shevyrdyaeva, Galina; Shchebetova, N I; Petrov, Valentín

doi:10.1364/ome.6.002933

Cited by 73 publications

(48 citation statements)

References 7 publications

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“…В частности, большое внимание привлекают барийсодержащие сульфиды и селениды [3][4][5]. Кристаллы BaGa 2 GeS 6 (BGGS), выращенные совсем недавно [6], обладают прекрасными нелинейными характеристиками [7,8], сравнимыми с коммерческими кристаллами (например, AgGaS 2 ), в то же время они более стабильны химически, имеют большую энергетическую щель и, таким образом, являются перспективными для спектроскопических применений в видимой, ближней ИК и ИК областях спектра (0.38−10 µm) [8].…”

Section: Introductionunclassified

Динамика решетки и электронные свойства нелинейного кристалла BaGa-=SUB=-2-=/SUB=-GeS-=SUB=-6-=/SUB=-: комбинационное рассеяние, ИК отражение и расчет ab initio

Климин¹,

Маврин²,

Budkin³

et al. 2019

Журнал Технической Физики

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We have measured the polarized Raman scattering and IR reflection spectra of a BaGa_2GeS_6 crystal, the Ga and Ge atoms of which are disordered, randomly occupying crystallographic positions of the same kind. The IR reflection spectra have been processed by the dispersion analysis method. The dispersion of phonons, the density of phonon states, the electronic band structure, and the partial densities of electronic states have been calculated in the DFT approximation using the alchemical potential method for disordered Ga and Ge atoms. It has been found that the stretching vibrations in the vibrational spectra are separated from the bending modes by a gap of about 100 cm^–1 and that the band structure of the crystal has an indirect energy gap.

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Section: Introductionunclassified

Динамика решетки и электронные свойства нелинейного кристалла BaGa-=SUB=-2-=/SUB=-GeS-=SUB=-6-=/SUB=-: комбинационное рассеяние, ИК отражение и расчет ab initio

Климин¹,

Маврин²,

Budkin³

et al. 2019

Журнал Технической Физики

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“…A new promising uniaxial nonlinear crystal BaGa 2 GeSe 6 (BGGSe) was developed in the Kuban State University [5]. The BGGSe crystal has a high optical damage threshold (110 MW/cm 2 ), a wide spectral transparency range (from 0.5 to 18 μm) and a high nonlinearity (d 11 = 66 ± 15 pm/V) [5], which makes this crystal very attractive for frequency conversion of laser radiation into (or within) the mid-IR range.…”

Section: Introductionmentioning

confidence: 99%

“…The BGGSe crystal has a high optical damage threshold (110 MW/cm 2 ), a wide spectral transparency range (from 0.5 to 18 μm) and a high nonlinearity (d 11 = 66 ± 15 pm/V) [5], which makes this crystal very attractive for frequency conversion of laser radiation into (or within) the mid-IR range. Therefore, the objective of this paper is estimation of BGGSe crystal efficiency with respect to ZnGeP 2 , GaSe, and AgGaSe 2 by means of frequency conversion simulation for CO-and CO 2 -laser radiation.…”

Section: Introductionmentioning

confidence: 99%

“…The most known and widespread mid-IR crystals are ZnGeP 2 , GaSe, and AgGaSe 2 [3,4]. It is worth noticing that the ZnGeP 2 crystal is usually considered to be the most efficient one and sometimes called the "standard" of mid-IR crystals [4].A new promising uniaxial nonlinear crystal BaGa 2 GeSe 6 (BGGSe) was developed in the Kuban State University [5]. The BGGSe crystal has a high optical damage threshold (110 MW/cm 2 ), a wide spectral transparency range (from 0.5 to 18 μm) and a high nonlinearity (d 11 = 66 ± 15 pm/V) [5], which makes this crystal very attractive for frequency conversion of laser radiation into (or within) the mid-IR range.…”

mentioning

confidence: 99%

“…The optical damage threshold depends on the laser emission wavelength and pulse duration; therefore we selected measured data for similar conditions: the radiation wavelength was ~ 10 μm, the pulse duration was ~ 0.1 μs. The properties of ZnGeP 2 , GaSe, and AgGaSe 2 crystals were taken from reference [3], and of BGGSe crystal from [5]. The input and output data of the calculation are presented in Table 1.…”

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confidence: 99%

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Numerical analysis of СО laser frequency conversion efficiency in BaGa₂GeSe₆crystal

2018

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Non-linear optical characteristics of a new BaGa 2 GeSe 6 crystal were numerically studied and compared with well-known mid-IR nonlinear crystals ZnGeP 2 , GaSe, and AgGaSe 2 .The calculations demonstrated for the new crystal to be probably the most efficient crystal for second harmonic generation of CO-and CO 2 -laser radiation. It was found that a broadband two-stage frequency conversion of multi-line CO-laser radiation in this crystal is possible within 2.5-9.0 μm wavelength range with higher efficiency than in ZnGeP 2 and AgGaSe 2 crystals. IntroductionA number of fundamental and applied problems in the fields of photochemistry, spectroscopy, plasma diagnostics and others need mid-IR laser sources. To obtain mid-IR laser radiation, different nonlinear techniques have been extensively used: optical parametric oscillators and difference frequency generation of short-wave (0.7-3 μm) lasers [1]; sum and difference frequency generation of mid-IR lasers [2]. Nonlinear optical crystals should have following properties: transparency in required spectral range; adequate birefringence for phase-matching; high nonlinear coefficient; high optical damage threshold and some others. The most known and widespread mid-IR crystals are ZnGeP 2 , GaSe, and AgGaSe 2 [3,4]. It is worth noticing that the ZnGeP 2 crystal is usually considered to be the most efficient one and sometimes called the "standard" of mid-IR crystals [4].A new promising uniaxial nonlinear crystal BaGa 2 GeSe 6 (BGGSe) was developed in the Kuban State University [5]. The BGGSe crystal has a high optical damage threshold (110 MW/cm 2 ), a wide spectral transparency range (from 0.5 to 18 μm) and a high nonlinearity (d 11 = 66 ± 15 pm/V) [5], which makes this crystal very attractive for frequency conversion of laser radiation into (or within) the mid-IR range. Therefore, the objective of this paper is estimation of BGGSe crystal efficiency with respect to ZnGeP 2 , GaSe, and AgGaSe 2 by means of frequency conversion simulation for CO-and CO 2 -laser radiation. The calculations under discussion demonstrated that broadband two-stage frequency conversion of multi-line COlaser is quite possible in a BGGSe crystal as well as in ZnGeP 2 [6] and AgGaSe 2 [7].

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A New Nonlinear Optical Selenide Crystal AgLiGa₂Se₄ with Good Comprehensive Performance in Mid‐Infrared Region

Yelisseyev

Lobanov

Мolokeev

et al. 2020

Advanced Optical Materials

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Mid‐infrared (mid‐IR) nonlinear optical (NLO) crystals are indispensable for the mid‐IR lasers generation with tunable wavelengths from 3 to 20 µm. AgGaSe2 is a commercial mid‐IR NLO crystal with the highest figures of merit, but suffers low laser damage threshold (LDT). To achieve the balance of optical transmission, NLO effect, and LDT, it is proposed to molecularly modify the AgGaSe2 structure by introducing the [LiSe4] tetrahedra, and successfully grow large crystals of a new selenide AgLiGa2Se4. The replacement of half of the heavy Ag+ cations with light Li+ increases the band gap to 2.2 eV (vs. 1.7 eV in AgGaSe2). The LDT value in AgLiGa2Se4 increases five times compared to that in AgGaSe2, while keeping a relatively large NLO susceptibility of 26 pm V−1. Moreover, the thermal expansion coefficients in AgLiGa2Se4 are approximately two times lower in absolute value compared with AgGaSe2, which is beneficial to the large crystal growth. All these advantages would make AgLiGa2Se4 a new promising NLO crystal for mid‐IR laser applications.

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Crystal growth and characterization of new quaternary chalcogenide nonlinear crystals for the mid-IR: BaGa_2GeS_6 and BaGa_2GeSe_6

Cited by 73 publications

References 7 publications

Динамика решетки и электронные свойства нелинейного кристалла BaGa-=SUB=-2-=/SUB=-GeS-=SUB=-6-=/SUB=-: комбинационное рассеяние, ИК отражение и расчет ab initio

Динамика решетки и электронные свойства нелинейного кристалла BaGa-=SUB=-2-=/SUB=-GeS-=SUB=-6-=/SUB=-: комбинационное рассеяние, ИК отражение и расчет ab initio

Numerical analysis of СО laser frequency conversion efficiency in BaGa₂GeSe₆crystal

A New Nonlinear Optical Selenide Crystal AgLiGa₂Se₄ with Good Comprehensive Performance in Mid‐Infrared Region

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Crystal growth and characterization of new quaternary chalcogenide nonlinear crystals for the mid-IR: BaGa_2GeS_6 and BaGa_2GeSe_6

Cited by 73 publications

References 7 publications

Динамика решетки и электронные свойства нелинейного кристалла BaGa-=SUB=-2-=/SUB=-GeS-=SUB=-6-=/SUB=-: комбинационное рассеяние, ИК отражение и расчет ab initio

Динамика решетки и электронные свойства нелинейного кристалла BaGa-=SUB=-2-=/SUB=-GeS-=SUB=-6-=/SUB=-: комбинационное рассеяние, ИК отражение и расчет ab initio

Numerical analysis of СО laser frequency conversion efficiency in BaGa2GeSe6crystal

A New Nonlinear Optical Selenide Crystal AgLiGa2Se4 with Good Comprehensive Performance in Mid‐Infrared Region

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Product

Resources

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Numerical analysis of СО laser frequency conversion efficiency in BaGa₂GeSe₆crystal

A New Nonlinear Optical Selenide Crystal AgLiGa₂Se₄ with Good Comprehensive Performance in Mid‐Infrared Region