Title :
Asynchronous optical sampling for high-speed characterization of integrated resonant THz sensor arrays
Author :
Först, M. ; Janke, C. ; Nagel, M. ; Kurz, H. ; Bartels, A.
Author_Institution :
Inst. fur Halbeitertech., Technische Hochschule Aachen, Germany
Abstract :
In this paper, we employ two fs-Ti:sapphire lasers actively stabilized to repetition rates near 1 GHz to implement high-speed asynchronous optical sampling (ASOPS) in the field of THz time-domain spectroscopy. An integrated THz resonator device comprising two photoconductive (PC) switches for pulsed generation and time-delayed detection of electrical sub-picosecond pulses is designed. Corresponding Fourier transform spectra of the time-domain signals provide insight into the spectral characteristics of the THz resonator.
Keywords :
high-speed optical techniques; laser stability; optical resonators; optical sensors; photoconducting switches; solid lasers; Al2O3:Ti; Fourier transform spectra; THz time-domain spectroscopy; Ti:sapphire laser; asynchronous optical sampling; electrical sub-picosecond pulse; high-speed characterization; integrated THz resonator device; integrated resonant THz sensor array; laser stabilization; photoconductive switch; pulsed generation; spectral characteristics; time-delayed detection; time-domain signal; High speed optical techniques; Integrated optics; Optical arrays; Optical pulse generation; Optical resonators; Optical sensors; Resonance; Sampling methods; Sensor arrays; Sensor phenomena and characterization;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568161
