Journal
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Volume 58, Issue 11, Pages -Publisher
SCIENCE PRESS
DOI: 10.1007/s11433-015-5728-x
Keywords
second harmonic generation; femtosecond laser micromachining; lithium niobate microresonator
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Funding
- National Key Basic Research Program of China [2014CB921300]
- National Natural Science Foundation of China [61275205, 11174305, 61205209]
- Fundamental Research Funds for the Central Universities
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We report on second harmonic generation (SHG) in on-chip high-Q (>10(5)) lithium niobate (LiNbO3, LN) microresonators fabricated by femtosecond laser micromachining. We examine the efficiency of SHG with either a continuous-wave (CW) or an ultrashort pulsed pump laser. The normalized conversion efficiencies of SHG obtained with the CW and pulsed pump lasers are measured to be 1.35x10(-5) m W-1 and 2.30x10(-6) m W-1, respectively.
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