| Инд. авторы: | Nikolaev N.A., Andreev Y.M., Kononova N.G., Lanskii G.V., Mamrashev A.A., Antsygin V.D., Kokh K.A., Kokh A.E. |
| Заглавие: | Temperature dependence of terahertz optical properties of LBO and perspectives of applications in down-converters |
| Библ. ссылка: | Nikolaev N.A., Andreev Y.M., Kononova N.G., Lanskii G.V., Mamrashev A.A., Antsygin V.D., Kokh K.A., Kokh A.E. Temperature dependence of terahertz optical properties of LBO and perspectives of applications in down-converters // Journal of Physics: Conference Series. - 2018. - Vol.951. - Iss. 1. - Art.012005. - ISSN 1742-6588. |
| Идентиф-ры: | DOI: 10.1088/1742-6596/951/1/012005; РИНЦ: 35501813; SCOPUS: 2-s2.0-85042377577; WoS: 000446239900005; |
| Реферат: | eng: Lithium triborate LiB3O5 (LBO) crystals are widely used for frequency conversion of the near-IR lasers within main transparency windows. Their optical properties at these wavelengths are well studied. However, very little work has been published on the properties in the terahertz (THz) range. There was a lack of data on the refractive indices, the absorption coefficients spectra and their temperature dispersions. There are no reports of THz applications. Present work reveals all these topics including the prospects for use LBO crystals as down-converters of the near-IR lasers radiation. Optically finished samples of flux-grown LBO crystals were studied by THz-TDS. The refractive index dispersions were recorded and then approximated in the form of Sellmeier equations for the temperatures of 300 and 81 K. The phase-matching curves for the IR-THz and THz-THz frequency conversions were calculated. It was found that the absorption coefficients of LBO decrease significantly with cooling to cryogenic temperatures, but the overall character of optical properties changes is intricated. Experimental results are discussed in detail considering potential characteristics of THz down-converters. © Published under licence by IOP Publishing Ltd. |
| Ключевые слова: | Dispersions; Infrared lasers; Lithium compounds; Optical properties; Terahertz range; Temperature dependence; Sellmeier equation; Absorption cooling; Phase-matching curves; Lithium triborate; Cryogenic temperatures; Absorption co-efficient; Temperature distribution; Refractive index; Phase matching; Nanotechnology; Nanophotonics; Refractive index dispersion; Dispersion (waves); |
| Издано: | 2018 |
| Физ. хар-ка: | 012005 |
| Конференция: | Название: 6th International conference on Modern Nanotechnologies and Nanophotonics for Science and Industry, ICMNNSI 2017 Даты проведения: 2017-11-09 - 2017-11-13 |