Powerful terahertz emission from Bi2Sr2CaCu2O8+delta mesa arrays
| Title: | Powerful terahertz emission from Bi2Sr2CaCu2O8+delta mesa arrays |
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| Authors: | Benseman, T. M., Gray, K. E., Koshelev, A. E., Kwok, W. -K., Welp, U., Minami, H., Kadowaki, K., Yamamoto, T. |
| Publication Year: | 2013 |
| Collection: | Condensed Matter |
| Subject Terms: | Condensed Matter - Superconductivity |
| More Details: | Stacks of intrinsic Josephson junctions (IJJs) in high-temperature superconductors enable the fabrication of compact sources of coherent terahertz radiation. Here we demonstrate that multiple stacks patterned on the same Bi2Sr2CaCu2O8+delta crystal can - under optimized conditions - be synchronized to emit high-power THz-radiation. For three synchronized stacks we achieved 610 microwatts of continuous-wave coherent radiation power at 0.51 THz. We suggest that synchronization is promoted by THz-waves in the base crystal. We note though that synchronization cannot be achieved in all samples. However, even in these cases powers on the 100-microwatt scale can be generated. Comment: 17 pages, 4 Figures. Included Supplemental Material contains an additional 4 pages and 4 Figures |
| Document Type: | Working Paper |
| DOI: | 10.1063/1.4813536 |
| Access URL: | http://arxiv.org/abs/1305.3964 |
| Accession Number: | edsarx.1305.3964 |
| Database: | arXiv |
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