New infrared nonlinear optical crystal CsGeBr3: synthesis, structure and powder second-harmonic generation properties
Creators
- 1. Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 305, Taiwan (China)
- 2. Department of Physics, Tamkang University, Taipei 251, Taiwan (China)
- 3. College of Materials Science and Engineering, Shandong University of Science and Technology, Shandong Province (China)
Description
An innovative infrared nonlinear optical crystal CsGeBr3 was synthesized. Ab initio calculations on CsGeBr3 were also carried out in order to analyse the second-order nonlinear susceptibilities. From its powder x-ray diffraction pattern, this crystal was characterized as a rhombohedral structure with an (R3m, No 160) space group symmetry. The reflection powder second-harmonic generation (PSHG) measurement of CGBr showed that its nonlinear optical efficiency is 1.62 times larger than that of rhombohedral CsGeCl3 and is 9.63 times larger than that of KH2PO4 (KDP), and most important of all that CsGeBr3 is phase-matchable. The rescaled deff(2) of CGBr was about 2.45 times larger than that of rhombohedral CsGeCl3, and this trend was coincident with the ab initio calculation results. The infrared transparent spectrum of rhombohedral CsGeBr3 was extended to more than 22.5 μm. The rhombohedral CsGeBr3 shows the potential in the realm of nonlinear optics and can be applied to the infrared region
Availability note (English)
Available online at http://stacks.iop.org/0953-8984/17/7275/cm5_46_011.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-8984/17/7275/cm5_46_011.pdf;
- DOI
- 10.1088/0953-8984/17/46/011;
- PII
- S0953-8984(05)99265-5;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 17
- Journal Issue
- 46
- Journal Page Range
- p. 7275-7286
- ISSN
- 0953-8984
- CODEN
- JCOMEL
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37059363
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ABSORPTION SPECTRA; CESIUM COMPOUNDS; CRYSTALS; EFFICIENCY; GERMANIUM BROMIDES; HARMONIC GENERATION; NONLINEAR OPTICS; NONLINEAR PROBLEMS; POTASSIUM PHOSPHATES; POWDERS; REFLECTION; SPACE GROUPS; SYMMETRY; SYNTHESIS; TRIGONAL LATTICES; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALI METAL COMPOUNDS; BROMIDES; BROMINE COMPOUNDS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; FREQUENCY MIXING; GERMANIUM COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; OPTICS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; POTASSIUM COMPOUNDS; SCATTERING; SPECTRA; SYMMETRY GROUPS