Characteristics of coherent terahertz wave generation from LiNbO3 optical parametric oscillator

Enhanced Terahertz Wave Generation via Stokes Wave Recycling in Non-Synchronously Picosecond Pulse Pumped Terahertz Source

“…It is one of most promising methods to generate THz wave by stimulated polariton scattering (SPS) [3] in LiNbO 3 (MgO:LN) crystal. Terahertz parametric oscillator (TPO) based on SPS was firstly obtained by means of nanosecond (ns) pulse laser pumped configuration [4]- [6], and further developed by Kawase et al [7]- [10]. After continuous improvement over decades [11]- [22], ns pumped TPO has already reached its limits owing to the harm of undesirable stimulated Brillouin scattering (SBS) effect.…”

Frequency-agile terahertz-wave generation and detection using a nonlinear optical conversion, and their applications for imaging

“…We have developed THz-wave parametric sources using this generation technique, including THz-wave parametric oscillators (TPOs) with a linear cavity [4][5][6][7][8] and THz-wave parametric generators (TPGs) without any cavity [9][10][11]. These sources have several features that make them superior to other THz-wave sources.…”

“…Additionally, in recent years, the THz-wave region has proven to be very attractive in a range of activities, from the fundamental science to advanced applications for industry. Our research has focused on development of coherent, tunable THz-wave sources, covering a wide spectral range [4][5][6][7][8]. These sources are bridging the gap between broadband THz generation used in THz time-domain spectrometry systems (THz-TDS), and monochromatic generation such as quantum cascade lasers (QCLs).…”

Investigation of pump-wavelength dependence of terahertz-wave parametric oscillator based on LiNbO3

“…Besides, the THz-wave parametric gain characteristics of the stimulated polarition scattering as well as its absorption inside the crystal are also responsible for the tuning capability of a TPO. The analytical expressions of the exponential gain for the THz and Stokes waves are given by [11,14,20]…”