A powder method for the high-efficacy evaluation of electro-optic crystals

Abstract

Electro-optic crystal holds great promise for extensive applications in optoelectronics and optical communication. However, the discovering of novel electro-optic crystals is sporadic due to the difficulties of large-sized crystal growth for electro-optic coefficient measurement. Herein, to address this issue, a high-efficacy evaluation method using accessible powder samples is proposed, in which second harmonic generation effect, infrared reflectance spectrum, and Raman spectrum are introduced to predict the magnitude of electro-optic coefficient. The calculated electro-optic coefficients of numerous reported electro-optic crystals through this approach give universally agreement with the experimental values, evidencing the validity of strategy. Based on this method, CsLiMoO4 is screened as a novel potential electro-optic crystal and high-quality crystal is grown by the Czochralski technique for electro-optic coefficient measurement with half-wave voltage method, whose result is also comparable to the calculated value. Consequently, the evaluation strategy presented here will pave a new avenue to explore promising electro-optic crystals efficiently.

Reporting Excellent Transverse Piezoelectric and Electro‐Optic Effects in Transparent Rhombohedral PMN‐PT Single Crystal by Engineered Domains

“…In general, the acoustic mode of the lattice can be ignored because of its small contribution to the linear electro-optical coefficients for most electro-optical materials. [37] However, the acoustic lattice vibration of the PMN-PT crystal contributes most of the electro-optic coefficient. The coefficient value shows a significant drop starting from a modulation frequency of 10 5 Hz, as shown in Figure 9d.…”

Nitrides: a promising class of nonlinear optical material candidates

“…Nonlinear optical (NLO) crystals have garnered significant attention due to their crucial role in advancing laser science and technology. [1][2][3][4][5][6][7] The conversion of laser frequency can be achieved through various up-and down-conversion processes in NLO crystals, such as second-order harmonic generation (SHG), sum frequency generation (SFG), difference frequency generation (DFG), optical parametric oscillation (OPO), and optical parametric amplification (OPA). 8 Over the past few decades, several promising deep-ultraviolet (DUV), ultravioletvisible (UV-Vis), and infrared (IR) crystals have been discovered and extensively researched, such as KBe 2 BO 3 F 2 (KBBF), 9 LiB 3 O 5 (LBO), 10 b-BaB 2 O 4 (b-BBO), 11 KH 2 PO 4 (KDP), 12 KTiOPO 4 (KTP), 13 AgGaS 2 (AGS), 14 AgGaSe 2 (AGSe) 15 and ZnGeP 2 (ZGP).…”

γ-P4S3I2: a new metal-free infrared second-order nonlinear optical crystal designed by polymorphism strategy

“…Exploring non-centrosymmetric (NCS) inorganic compounds is of great significance in the development of piezoelectric, pyroelectric, ferroelectric, and especially nonlinear optical (NLO) materials. [1][2][3][4][5][6] NLO materials are indispensable for applications in medical treatment, atmospheric detection and optical communication relying on frequency conversion. 7,8 To date, many well-known NLO crystals, such as β-BaB 2 O 4 , LiB 3 O 5 and CsLiB 6 O 10 as well as KTiOPO 4 and LiNbO 3 , have basically met the needs in the UV and visible (vis) regions.…”