CsCu₃SbS₄: rational design of a two-dimensional layered material with giant birefringence derived from Cu₃SbS₄

Abstract

It is an important and challenging task to develop new infrared (IR) birefringent materials to promote the development of laser technology. In this work, a novel thioantimonate with the highest...

Ba5Ga2SiO4S6: a Phase-Matching Nonlinear Optical Oxychalcogenide Design via Structural Regulation Originated from Heteroanion Introduction

“…Thus, Δn was tested using a ZEISS Axio A1 polarizing microscope. 76,77 As given in Figure S4, the Δn of Ba 5 Ga 2 SiO 4 S 6 is nearly 0.10 at λ = 546 nm based upon the calculating relation of Δn = R/T, which agrees well with the PM feature found in the experiment. Based on the above measurements, Ba 5 Ga 2 SiO 4 S 6 exhibits overall comprehensive properties, including helpful PM behavior, appropriate d eff , high LIDT, a large Δn, and a broad transparent window, which would be a potential UV-NLO crystal.…”

Phase matching achieved by isomorphous substitution in IR nonlinear optical material Ba2SnSSi2O7with an undiscovered [SnO4S] functional motif

“…Besides, the birefringence (Δ n ) was performed via a ZEISS Axio A1 polarizing microscope. 62–64 As shown in Fig. 2e, the Δ n of Ba 2 SnSSi 2 O 7 is about 0.063 at the wavelength of 546 nm according to the formula of Δ n = R / T (where R is the optical path difference and T is the crystal thickness).…”

Interesting dimensional transition through changing cations as the trigger in multinary thioarsenates displaying variable photocurrent response and optical anisotropy

“…As known, the Δ n value will mainly depend on the anisotropy of the anionic substructure, whereas the contribution of charge-balancing cations can be neglected. 45–50 In other words, compared with the 3D anionic [CdAs 4 S 8 ] 2− framework in [(NH 4 )Cs]CdAs 4 S 8 , the anisotropy of the 2D anionic [ZnAs 4 S 8 ] 2− layer in Cs 2 ZnAs 4 S 8 is more obvious, which is more beneficial for producing larger Δ n values.…”

“…As known, the Δn value will mainly depend on the anisotropy of the anionic substructure, whereas the contribution of chargebalancing cations can be neglected. [45][46][47][48][49][50] In other words, compared with the 3D anionic [CdAs 4 S 8 ] 2− framework in [(NH 4 )Cs] CdAs 4 S 8 , the anisotropy of the 2D anionic [ZnAs 4 S 8 ] 2− layer in Cs 2 ZnAs 4 S 8 is more obvious, which is more beneficial for producing larger Δn values. In particular for [(NH 4 )Cs]CdAs 4 S 8 , the calculated birefringence values are 0.29@1064 nm and 0.31@2050 nm, respectively, suggesting its potential for application as a dual-waveband birefringent crystal.…”