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The ridge waveguide fabrication with periodically poled MgO-doped lithium niobate for green laser |
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| Authors: | SW Kwon HM Lee H-Y Lee MK Song |
| Institution: | a School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea b Nano Bio-photonics Team, Korea Electronics Technology Institute, Bundang 463-816, Republic of Korea c School of Electrical and Computer Engineering, University of Seoul, Seoul 412-791, Republic of Korea d Department of Materials Engineering, Hankuk Aviation University, Goyang 412-791, Republic of Korea |
| Abstract: | Ridge waveguides were fabricated using an external field, a precision lapping machine and neutron loop discharge (NLD) in magnesium-oxide-doped lithium niobate. The measured quasi-phase-matching (QPM) wavelength of the second-harmonic generation (SHG) in a 30 mm long periodically poled magnesium-doped lithium niobate (PPMgLN) ridge waveguide which has a domain period of 6.8 μm is about 532 nm. A fabricated periodically poled magnesium-doped lithium niobate ridge waveguide was duty cycle of 51.9 ± 2.83% and demonstrated second-harmonic generation. By using this periodically poled magnesium-doped lithium niobate ridge waveguide, highly effective, low-cost optical devices with high power or short wavelength can be achieved. |
| Keywords: | Periodically poled magnesium lithium niobate Ridge waveguide Second-harmonic generation Duty cycle |
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