Singly resonant optical parametric oscillator based on adhesive-free-bonded periodically inverted KTiOPO4 plates: terahertz generation by mixing a pair of idler waves |
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Authors: | Zhao Pu Ragam Srinivasa Ding Yujie J Zotova Ioulia B Mu Xiaodong Lee Huai-Chuan Meissner Stephanie K Meissner Helmuth |
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Affiliation: | Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, USA. |
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Abstract: | We implemented a singly resonant optical parametric oscillator based on adhesive-free-bonded periodically inverted KTiOPO4 plates. It has major advantages such as walk-off compensation and oscillation at four wavelengths. The threshold of the oscillation was measured to be 8 MW/cm2, which is about a factor of 4 lower than that based in two separate KTiOPO4 crystals. By frequency-mixing the dual-wavelength output in GaP stacks, we generated the terahertz radiation at 2.54 THz. The tuning range of the terahertz output was demonstrated to be 2.19-2.77 THz. |
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