Using a canonical pump–probe experimental technique, we studied terahertz (THz) wave generation and detection by optical rectification and mixing in Czochralski-grown periodically poled $\mathrm{Mg}:\mathrm{Y}:{\mathrm{LiNbO}}_3$ (PPLN) crystals. THz waves with frequencies at 1.37 and 0.68 THz as well as 1.8 THz were obtained for PPLN with nonlinear grating periods of 30 and $60\mu \mathrm{m}$ , respectively. A general theoretical model was developed by considering the dispersion and damping of a low-frequency phonon-polariton mode. Our results show that THz waves are generated in forward and backward directions by pumping pulse rectification. The generated THz waves depend on the spectral shape of the laser pulses, quasi-phase mismatches, and dispersion characteristics of a crystal.

© 2006 Optical Society of America

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Far-infrared properties of DAST (OL)
• Broadband quasi-phase-matched second-harmonic generation in MgO-doped periodically poled LiNbO_3 at the communications band (OL)
• Femtosecond time-resolved absorption processes in lithium niobate crystals (OL)
• Picosecond-pulse wavelength conversion based on cascaded second-harmonic generation-difference frequency generation in a periodically poled lithium niobate waveguide (AO)
• Femtosecond recording and time-resolved readout of spatial gratings in lithium niobate crystals (JOSAB)

Related Conference Papers

• Carrier-Envelope-Phase Dependent Down-Conversion of Intense Few-Cycle Laser-Pulses to Terahertz Frequencies
• Microscopic Description for THz Generation in Plasmas Induced by Few-Cycle Laser Pulses
• Microscopic Description for THz Generation in Plasmas Induced by Few-Cycle Laser Pulses
• Finite Pump Beam Size Effects in Optical-Pump/THz-Probe Spectroscopy
• Finite Pump Beam Size Effects in Optical-Pump/THz-Probe Spectroscopy