Conditions of THz generation in laser filament from ultrashort pulses under aberrations in one- and two-color optical scheme are observed. Possibilities of controlling THz radiation pattern by electric field and aberrations in focusing beam are discussed.
ultrashort laser pulses, THz radiation, filamentation, laser plasma, optical schematics for THz generation, control of parameters of THz radiation
1. Zhu B., Chen Y., Deng K., Hu W., Yao Z.S. Terahertz Science and Technology and Applications // Progress in Electromagnetics Research Symposium Conf. Ser. Beijing. 2009. P. 1166–1170.
2. Hamster H., Falcone R.W. Proposed Source of Sub-picosecond Far Infrared Radiation // Ultrafast Phenomena VII. Springer Series in Chemical Physics. Berlin: Springer, 1990. V. 53. P. 125–127.
3. Hamster H., Sullivan A., Gordon S., Falcone R.W. Short-pulse terahertz radiation from high-intensity-laser-produced plasmas // Phys. Rev. E. 1994. V. 49, N 1. P. 671–677.
4. Tzortzakis S., Méchain G., Patalano G., André Y., Prade B., Franco M., Mysyrowicz A. Coherent subterahertz radiation from femtosecond infrared filaments in air // Opt. Lett. 2002. V. 27, N 21. P. 1944–1946.
5. Méchain G., Tzortzakis S., Prade B., Franco M., Mysyrowicz A., Leriche B. Calorimetric detection of THz radiation from femtosecond filaments in air // Appl. Phys. B: Lasers Opt. 2003. V. 77, N 8. P. 707–709.
6. Amico C.D., Houard A., Franco M., Prade B., Mysyrowicz A. Coherent and incoherent radial THz radiation emission from femtosecond filaments in air // Opt. Express. 2007. V. 15, N 23. P. 15274–15279.
7. Löffler T., Jacob F., Roskos H.G. Generation of terahertz pulses by photoionization of electrically biased air // Appl. Phys. Lett. 2000. V. 77, N 3. P. 453–455.
8. Löffler T., Roskos H.G. Gas-pressure dependence of terahertz-pulse generation in a laser-generated nitrogen plasma // J. Appl. Phys. 2002. V. 91, N 5. P. 2611–2614.
9. Houard A., Liu Y., Prade B., Tikhonchuk V.T., Mysyrowicz A. Strong enhancement of terahertz radiation from laser filaments in air by a static electric field // Phys. Rev. Lett. 2008. V. 100, N 25. P. 1–4.
10. Chen Y., Wang T.J., Marceau C., Th́berge F., Châteauneuf M., Dubois J., Kosareva O., Chin S.L. Characterization of terahertz emission from a dc-biased filament in air // Appl. Phys. Lett. 2009. V. 95, N 10. P. 93–96.
11. Wang T.J., Yuan S., Chen Y., Daigle J.F., Marceau C., Th́berge F., Châteauneuf M., Dubois J., Chin S.L. Toward remote high energy terahertz generation // Appl. Phys. Lett. 2010. V. 97, N 11. Р. 111108-1–3.
12. Liu Y., Houard A., Prade B., Mysyrowicz A., Diaw A., Tikhonchuk V.T. Amplification of transition-Cherenkov terahertz radiation of femtosecond filament in air // Appl. Phys. Lett. 2008. V. 93, N 5. P. 2006–2009.
13. Wang T., Marceau C., Yuan S., Chen Y., Wang Q., Th F. External focusing effect on terahertz emission from a two-color femtosecond laser-induced filament in air // Laser Phys. Lett. 2011. V. 61, N 1. P. 57–61.
14. Borodin A.V., Esaulkov M.N., Kuritsyn I.I., Kotelnikov I.A., Shkurinov A.P. On the role of photoionization in generation of terahertz radiation in the plasma of optical breakdown // J. Opt. Soc. Am. B. 2012. V. 29, N 8. P. 1911.
15. You Y.S., Oh T.I., Kim K.Y. Off-axis phase-matched terahertz emission from twocolor laser-induced plasma filaments // Phys. Rev. Lett. 2013. V. 109, N 18. P. 1–5.
16. Blank V., Thomson M.D., Roskos H.G. Spatio-spectral characteristics of ultrabroadband THz emission from two-colour photoexcited gas plasmas and their impact for nonlinear spectroscopy // New J. Phys. 2013. V. 15, N 7. 20 р.
17. Klarskov P., Strikwerda A.C., Iwaszczuk K., Jepsen P.U. Experimental three dimensional beam profiling and modeling of a terahertz beam generated from a two-color air plasma // New J. Phys. 2013. V. 15. 13 р.
18. Kim K.Y., Taylor A.J., Glownia J.H., Rodriguez G. Coherent control of terahertz supercontinuum generation in ultrafast laser – gas interactions // Nat. Photon. 2008. V. 2. P. 605–609.
19. Rodriguez G., Dakovski G.L. Scaling behavior of ultrafast two-color terahertz generation in plasma gas targets: Energy and pressure dependence // Opt. Express. 2010. V. 18, N 14. P. 15130–15143.
20. Thomson M.D., Blank V., Roskos H.G. Terahertz white-light pulses from an air plasma photo-induced by incommensurate two-color optical fields // Opt. Express. 2010. V. 18, N 22. P. 23173–23182.
21. Matsubara E., Nagai M., Ashida M. Ultrabroadband coherent electric field from far infrared to 200 THz using air plasma induced by 10 fs pulses // Appl. Phys. Lett. 2012. V. 101, N 1. P. 011105.
22. Kulipanov G.N., Lisenko A.A., Matvienko G.G., Oshlakov V.K., Kubarev V.V., Chesnokov E.N., Babchenko S.V. Eksperimental'nye issledovaniya vzaimodejstviya teragertsovogo izlucheniya novosibirskogo lazera na svobodnyh elektronah s vodnym aerozolem // Optika atmosf. i okeana. 2014. V. 27, N 12. P. 1070–1073; Kulipanov G.N., Lisenko А.А., Matvienko G.G., Oshlakov V.K., Kubarev V.V., Chesnokov Е.N., Babchenko S.V. Experimental study of the interaction between terahertz radiation from the Novosibirsk free-electron laser and water aerosol // Atmos. Ocean. Opt. 2015. V. 28, N 2. P. 165–168.
23. Ivanov N.G., Losev V.F., Lubenko D.M., Prokop'ev V.E., Sitnik K.A. Forming of supercontinuum in the visible upon filamentation of a femtosecond pulse in the air // Proc. SPIE 10228. Nonlinear Opt. Appl. 2017. V. X. P. 1022809-1–9.