Nonlinear devices

Koechner, Walter

doi:10.1007/978-1-4757-8519-7_10

“…Nonlinear optical (NLO) crystals capable of expanding the spectral ranges of solid-state lasers from ultraviolet (UV) to infra-red (IR) regions through a second-harmonic generation (SHG) or optical parametric oscillation (OPO) processes play a crucial role in the development of the laser science and technology. [1][2][3][4][5][6][7][8][9][10] However, rationally designing a high-performance NLO crystal is still a great challenge because of its rigorous structure and properties requirements. Structurally, only the noncentrosymmetric (NCS) structure can exhibit the SHG response.…”

mentioning

confidence: 99%

An Effective Strategy for Designing Nonlinear Optical Crystals by Combining the Structure‐Directing Property of Oxyfluorides with Chemical Substitution

Hou

¹

,

Wu

²

,

Yu

³

et al. 2021

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Rationally designing a high‐performance nonlinear optical (NLO) crystal remains a great ongoing challenge. It involves not only the design of noncentrosymmetric structures but also property optimization. In this communication, a new strategy for effectively designing the NLO crystal has been put forward, that is, using the structure‐directing property of oxyfluoride anions to obtain a noncentrosymmetric and polar structure, and then by substitution of IO3− for isovalent F− anions to further enhance the SHG response. With this strategy, a new iodate fluoride, Ba2[MoO3F(IO3)](MoO3F2) has been successfully designed from the Ba2(MoO3F2)F2 with the cis‐directing [MoO4F2]4− groups. It exhibits a large SHG response (≈8×KDP), a wide transparent region (0.30–10.92 μm), a high laser‐induced damage threshold (LDT) (88.53 MW cm−2), and a large birefringence (≈0.264@532 nm). These indicate Ba2[MoO3F(IO3)](MoO3F2) would be a promising NLO crystal.

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“…Nonlinear optical (NLO) crystals capable of expanding the spectral ranges of solid‐state lasers from ultraviolet (UV) to infra‐red (IR) regions through a second‐harmonic generation (SHG) or optical parametric oscillation (OPO) processes play a crucial role in the development of the laser science and technology [1–10] . However, rationally designing a high‐performance NLO crystal is still a great challenge because of its rigorous structure and properties’ requirements.…”

Section: Figurementioning

confidence: 99%

An Effective Strategy for Designing Nonlinear Optical Crystals by Combining the Structure‐Directing Property of Oxyfluorides with Chemical Substitution

Hou

¹

,

Wu

²

,

Yu

³

et al. 2021

View full text Add to dashboard Cite

Rationally designing a high‐performance nonlinear optical (NLO) crystal remains a great ongoing challenge. It involves not only the design of noncentrosymmetric structures but also property optimization. In this communication, a new strategy for effectively designing the NLO crystal has been put forward, that is, using the structure‐directing property of oxyfluoride anions to obtain a noncentrosymmetric and polar structure, and then by substitution of IO3− for isovalent F− anions to further enhance the SHG response. With this strategy, a new iodate fluoride, Ba2[MoO3F(IO3)](MoO3F2) has been successfully designed from the Ba2(MoO3F2)F2 with the cis‐directing [MoO4F2]4− groups. It exhibits a large SHG response (≈8×KDP), a wide transparent region (0.30–10.92 μm), a high laser‐induced damage threshold (LDT) (88.53 MW cm−2), and a large birefringence (≈0.264@532 nm). These indicate Ba2[MoO3F(IO3)](MoO3F2) would be a promising NLO crystal.

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