Study of middle infrared difference frequency generation using a femtosecond laser source in LGT

Boursier, Élodie; Archipovaitė, Giedrė; Delagnes, Jean-Christophe; Petit, S.; Ernotte, Guilmot; Lassonde, Philippe; Segonds, Patricia; Boulanger, Benoı̀t; Petit, Yannick; Légaré, François; Рощупкин, Д. В.; Cormier, Éric

doi:10.1364/ol.42.003698

Cited by 10 publications

(7 citation statements)

References 18 publications

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“…Very recently, a phase-matched difference frequency generation ranging from 1.4 to 4.7 μm was obtained in a LGT crystal in the femtosecond regime. 41 Optical parametric generation experiments also manifested laser emission at 4.14 μm in LGN. 40 Interestingly, compared with commercial borate and phosphate NLO crystals, the IR transparency windows of LGT and LGN are much wider and extend up to 6.0 and 7.4 μm, respectively.…”

Section: Introductionmentioning

confidence: 99%

Pushing Nonlinear Optical Oxides into the Mid-Infrared Spectral Region Beyond 10 μm: Design, Synthesis, and Characterization of La₃SnGa₅O₁₄

et al. 2018

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Mid-infrared (mid-IR) coherent light is crucial for several applications in science as well as daily life, and its development especially in powerful augmentation is constrained by the availability of nonlinear optical (NLO) materials. The development of useful mid-IR NLO materials is limited by the requirements of a wide mid-IR transparent window, high laser damaged threshold (LDT), and strong NLO effect. It is common knowledge that oxides are not suitable mid-IR NLO materials, as their IR absorption cutoff wavelengths are usually <6 μm; however, their LDTs and NLO effects can be large. Herein, we focused on langasite oxides and built structure-composition-property maps that describe the NLO properties in these materials by combining computational property prediction and experimental characterization. Accordingly, rational molecular design was performed, a new member of the langasite family, LaSnGaO (LGSn), was synthesized, and single crystals were grown. The produced material exhibits the widest transparent region (0.27-11.0 μm) among available oxides, the largest LDT (846 MW/cm) among materials that are transparent to 10 μm, and the strongest SHG effect among langasites. The discovery of LGSn facilitates the application of oxides as NLO crystals in the mid-IR spectral region beyond 10 μm. More generally, the developed strategy could be used to guide and accelerate the systematic discovery of functional materials through understanding the key structure-composition-property relationships using the predictive power of computational tools.

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Section: Introductionmentioning

confidence: 99%

Pushing Nonlinear Optical Oxides into the Mid-Infrared Spectral Region Beyond 10 μm: Design, Synthesis, and Characterization of La₃SnGa₅O₁₄

et al. 2018

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“… is the nonlinear refractive index of wave . As the value of LGN crystal has not been reported, we assume that for near-IR pulses around and for mid-IR pulses centered at in our simulations, which are estimated according to the reported value of LGT crystal at 343 nm [46] . represents the idler absorption coefficient at , which is calculated according to the transmission curve of LGN crystal given in Ref.…”

Section: Numerical Modelmentioning

confidence: 99%

“…The langasite oxides, e.g., LGN, La 3 Ga 5.5 Ta 0.5 O 14 (LGT) and La 3 Ga 5 SiO 14 (LGS), have been used as piezoelectric and electro-optic crystals for a long time. Only in recent years have langasite oxides been found to be superior mid-IR nonlinear crystals [45][46][47][48][49] . As shown in Figure 1, their IR cutoff transparent wavelengths extend to the region of 5-10 µm (e.g., ∼7.5 µm for LGN crystal [48] ), longer than those of commonly used oxides.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, langasite oxides are transparent to the developed pump lasers at approximately , and they are also immune to the nonlinear two-photon absorption of the pump due to their relatively large bandgap energy (e.g., LGN: 4.43 eV). Some recent experimental works have demonstrated DFG pumped by Ti:sapphire laser in LGT crystal [46] and DFG pumped by 1064 nm laser in LGN crystal [47] . The large bandgap energy of langasite oxides also enables them to have higher damage thresholds than semiconductor crystals.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the data come from the book, D. N. Nikogosyan, Nonlinear Optical Crystals: A Complete Survey (Springer, New York, 2006). Other data for langasite oxides come from Refs [45][46][47][48]. and[51].…”

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confidence: 99%

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Toward terawatt few-cycle pulses via optical parametric chirped-pulse amplification with oxide crystals

Liu

Wang

et al. 2019

High Pow Laser Sci Eng

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High-power femtosecond lasers beyond $5~\unicode[STIX]{x03BC}\text{m}$ are attractive for strong-field physics with mid-infrared (IR) fields but are difficult to scale up. In optical parametric chirped-pulse amplification (OPCPA) at mid-IR wavelengths, a nonlinear crystal is vital, and its transmittance, dispersion, nonlinear coefficient and size determine the achievable power and wavelength. OPCPA beyond $5~\unicode[STIX]{x03BC}\text{m}$ routinely relies on semiconductor crystals because common oxide crystals are not transparent in this spectral range. However, the small size and low damage threshold of semiconductor crystals fundamentally limit the peak power to gigawatts. In this paper, we design a terawatt-class OPCPA system at $5.2~\unicode[STIX]{x03BC}\text{m}$ based on a new kind of oxide crystal of $\text{La}_{3}\text{Ga}_{5.5}\text{Nb}_{0.5}\text{O}_{14}$ (LGN). The extended transparent range, high damage threshold, superior phase-matching characteristics and large size of LGN enable the generation of 0.13 TW seven-cycle pulses at $5.2~\unicode[STIX]{x03BC}\text{m}$ . This design fully relies on the state-of-the-art OPCPA technology of an octave-spanning ultrafast Ti:sapphire laser and a thin-disk Yb:YAG laser, offering the performance characteristics of high power, a high repetition rate and a stable carrier–envelope phase.

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A₃Te(Zn₂Ge)Ge₂O₁₄ (A = Sr, Ba, and Pb): New Langasite Mid-infrared Nonlinear Optical Materials by Rational Chemical Substitution

et al. 2021

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Mid-infrared (mid-IR) nonlinear optical (NLO) crystals with excellent comprehensive performances are urgently demanded in the laser technology field. Herein, a series of new langasite members, A3Te(Zn2Ge)Ge2O14 (A = Sr, Ba, and Pb), were designed and synthesized through a rational chemical substitution strategy with classic A3BC3D2O14 langasites as ideal prototypes. These crystals exhibited excellent mid-IR NLO properties including a large second harmonic generation (SHG) response (2.7, 3.2, 13.0 × KDP under 1064 nm and 0.11, 0.12, 0.54 × AGS under 2090 nm), a large band gap (4.03, 3.98, and 3.43 eV), and a wide transparency region from the ultraviolet (UV) to mid-IR region. Compared to those langasites with light D-site cations, the titled crystals highlighted the reduction of vibration frequency by the introduction of heavier Ge4+ cations, which helps extend the transparency range in the mid-IR region. Additionally, theoretical calculation results revealed the significant enhancement of the SHG effect by Pb2+ cations on the A-site. This work confirmed the feasibility of our chemical co-substitution strategy and enriched the langasites.

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Study of middle infrared difference frequency generation using a femtosecond laser source in LGT

Cited by 10 publications

References 18 publications

Pushing Nonlinear Optical Oxides into the Mid-Infrared Spectral Region Beyond 10 μm: Design, Synthesis, and Characterization of La₃SnGa₅O₁₄

Pushing Nonlinear Optical Oxides into the Mid-Infrared Spectral Region Beyond 10 μm: Design, Synthesis, and Characterization of La₃SnGa₅O₁₄

Toward terawatt few-cycle pulses via optical parametric chirped-pulse amplification with oxide crystals

A₃Te(Zn₂Ge)Ge₂O₁₄ (A = Sr, Ba, and Pb): New Langasite Mid-infrared Nonlinear Optical Materials by Rational Chemical Substitution

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Study of middle infrared difference frequency generation using a femtosecond laser source in LGT

Cited by 10 publications

References 18 publications

Pushing Nonlinear Optical Oxides into the Mid-Infrared Spectral Region Beyond 10 μm: Design, Synthesis, and Characterization of La3SnGa5O14

Pushing Nonlinear Optical Oxides into the Mid-Infrared Spectral Region Beyond 10 μm: Design, Synthesis, and Characterization of La3SnGa5O14

Toward terawatt few-cycle pulses via optical parametric chirped-pulse amplification with oxide crystals

A3Te(Zn2Ge)Ge2O14 (A = Sr, Ba, and Pb): New Langasite Mid-infrared Nonlinear Optical Materials by Rational Chemical Substitution

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Pushing Nonlinear Optical Oxides into the Mid-Infrared Spectral Region Beyond 10 μm: Design, Synthesis, and Characterization of La₃SnGa₅O₁₄

Pushing Nonlinear Optical Oxides into the Mid-Infrared Spectral Region Beyond 10 μm: Design, Synthesis, and Characterization of La₃SnGa₅O₁₄

A₃Te(Zn₂Ge)Ge₂O₁₄ (A = Sr, Ba, and Pb): New Langasite Mid-infrared Nonlinear Optical Materials by Rational Chemical Substitution