Terahertz emission from Indium Oxide films grown on MgO substrates using sub-bandgap photon energy excitation

Optics Express

Volumn 20, Issue 4, 2012, Pages 4518-4524

  Estacio, Elmer S ^a   Que, Christopher T ^a   Awitan, Fritz C B ^b   Bugante, Jan Isaac ^b   De Vera, Francesca Isabel ^b   Azares, Jonathan ^b   Afalla, Jessica ^b   De Vero, Jeffrey ^b   Somintac, Armando S ^b   Sarmago, Roland V ^b   Salvador, Arnel A ^b   Yamamoto, Kohji ^a   Tani, Masahiko ^a  

^a UNIVERSITY OF FUKUI   (Japan)

^b National Institute of Physics   (Philippines)

Author keywords

[No Author keywords available]

Indexed keywords

ENERGY GAP; INDIUM; OXIDE FILMS; SUBSTRATES; TERAHERTZ SPECTROSCOPY; TWO PHOTON PROCESSES;

DEFECT LEVELS; EMISSION MECHANISM; FLUENCES; INDIUM OXIDE; INDIUM OXIDE FILMS; MGO SUBSTRATE; PHOTON ENERGY; PHOTON ENERGY EXCITATION; STRAIN FIELDS; TERAHERTZ EMISSIONS; TERAHERTZ PULSE; THERMAL OXIDATION; THZ EMISSION; TIME DOMAIN SPECTROSCOPY; TWO-PHOTON ABSORPTIONS; WEAK ABSORPTION;

INTERFACES (MATERIALS);

EID: 84863418991     PISSN: None     EISSN: 10944087     Source Type: Journal    
DOI: 10.1364/OE.20.004518     Document Type: Article

References (27)

1. P. Gu and M. Tani, "Terahertz radiation from semiconductor surfaces," in Terahertz Optoelectronics: Topics in Applied Physics, Vol. 97, K. Sakai, ed. (Springer-Verlag, 2005).
2. G. Diwa, A. Quema, E. Estacio, R. Pobre, H. Murakami, S. Ono, and N. Sarukura, "Photonic-crystal-fiber pigtail device integrated with lens-duct optics for terahertz radiation coupling," Appl. Phys. Lett. 87(15), 151114 (2005).
3. S. Ono, H. Murakami, A. Quema, G. Diwa, N. Sarukura, R. Nagasaka, Y. Ichikawa, H. Ogino, E. Ohshima, A. Yoshikawa, and T. Fukuda, "Generation of terahertz radiation using zinc oxide as photoconductive material excited by ultraviolet pulses," Appl. Phys. Lett. 87(26), 261112 (2005).
4. M. Girtan, G. I. Rusu, G. G. Rusu, and S. Gurlui, "Influence of oxidation conditions on the properties of indium oxide thin films," Appl. Surf. Sci. 162-163, 492-498 (2000).
5. R. L. Weiher and R. P. Ley, "Optical properties of indium oxide," J. Appl. Phys. 37(1), 299-302 (1966).
6. R. Sharma, R. S. Mane, S.-K. Min, and S.-H. Han, "Optimization of growth on In2O3 nano-spheres thin films by electrodeposition for dye-sensitized solar cells," J. Alloy. Comp. 479(1-2), 840-843 (2009).
7. G. Lavareda, C. Nunes de Carvalho, E. Fortunato, A. R. Ramos, E. Alves, O. Conde, and A. Almaral, "Transparent thin film transistors based on indium oxide semiconductor," J. Non-Cryst. Solids 352(23-25), 2311-2314 (2006).
8. 3 films as sensor materials," J. Mater. Sci. Mater. Electron. 21(4), 360-363 (2010).
9. K. K. Makhija, A. Ray, R. M. Patel, U. B. Trivedi, and H. N. Kapse, "Indium oxide thin film based ammonia gas and ethanol vapour sensor," Bull. Mater. Sci. 28(1), 9-17 (2005).
10. 3," Phys. Rev. B 79(20), 205211 (2009).
11. T. Veal, P. King, C. McConville, D. Payne, A. Bourlange, and R. Egdell, "Transparent oxides: MBE unmasks the real indium oxide," Compound Semicon. 14(11), 27 (2008).
12. P. Erhart, A. Klein, R. Egdell, and K. Albe, "Band structure of indium oxide: Indirect versus direct band gap," Phys. Rev. B 75(15), 153205 (2007).
13. R. Ascázubi, I. Wilke, K. Denniston, H. Lu, and W. J. Schaff, "Terahertz emission by InN," Appl. Phys. Lett. 84(23), 4810-4812 (2004).
14. N. Sarukura, H. Ohtake, S. Izumida, and Z. Liu, "High average-power THz radiation from femtosecond laser-irradiated InAs in a magnetic field and its elliptical polarization characteristics," J. Appl. Phys. 84(1), 654-656 (1998).
15. 3 thin films grown on MgO(001) single crystal substrates," Thin Solid Films 303(1-2), 216-221 (1997).
16. M. Nakajima, K. Uchida, M. Tani, and M. Hangyo, "Strong enhancement of terahertz radiation from semiconductor surfaces using MgO hemispherical lens coupler," Appl. Phys. Lett. 85(2), 191-193 (2004).
17. M. S. Lee, W. C. Choi, E. K. Kim, C. K. Kim, and S.-K. Min, "Characterization of the oxidized indium thin films with thermal oxidation," Thin Solid Films 279(1-2), 1-3 (1996).
18. V. L. Malevich, R. Adomavičius, and A. Krotkus, "THz emission from semiconductor surfaces," C. R. Phys. 9(2), 130-141 (2008).
19. J. F. Holzman and A. Y. Elezzabi, "Two-photon photoconductive terahertz generation in ZnSe," Appl. Phys. Lett. 83(14), 2967-2969 (2003).
20. C. Soci and D. Moses, "Terahertz generation from poly(p-phenylene vinylene) photoconductive antenna," Synth. Met. 139(3), 815-817 (2003).
21. B. B. Hu, X.-C. Zhang, and D. H. Auston, "Terahertz radiation induced by subband-gap femtosecond optical excitation of GaAs," Phys. Rev. Lett. 67(19), 2709-2712 (1991).
22. J. H. Strait, P. A. George, J. Dawlaty, S. Shivaraman, M. Chandrashekhar, F. Rana, and M. G. Spencer, "Emission of terahertz radiation from SiC," Appl. Phys. Lett. 95(5), 051912 (2009).
23. T. J. Carrig, G. Rodriguez, T. S. Clement, A. J. Taylor, and K. R. Stewart, "Scaling of terahertz radiation via optical rectification in electro-optic crystals," Appl. Phys. Lett. 66(2), 121-123 (1995).
24. M. Kumar, V. N. Singh, F. Singh, K. V. Lakshmi, B. R. Mehta, and J. P. Singh, "On the origin of photoluminescence in indium oxide octahedron structures," Appl. Phys. Lett. 92(17), 171907 (2008).
25. 3 nanocrystals," Nanoscale Res. Lett. 4(6), 526-531 (2009).
26. E. Estacio, M. H. Pham, S. Takatori, M. Cadatal-Raduban, T. Nakazato, T. Shimizu, N. Sarukura, A. Somintac, M. Defensor, F. C. B. Awitan, R. B. Jaculbia, A. Salvador, and A. Garcia, "Strong enhancement of terahertz emission from GaAs in InAs/GaAs quantum dot structures," Appl. Phys. Lett. 94(23), 232104 (2009).
27. K. Hess, Advanced Theory of Semiconductor Devices (Wiley Interscience, 2000).