Electro-optic tuning of a periodically poled LiNbO3 optical parametric oscillator and mixing its output waves to generate mid-IR tunable from 9.4 to 10.5 μm
✍ Scribed by S Haidar; Y Sasaki; E Niwa; K Masumoto; H Ito
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 196 KB
- Volume
- 229
- Category
- Article
- ISSN
- 0030-4018
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✦ Synopsis
We demonstrate electro-optic spectral tuning in a pulsed periodically poled LiNbO 3 (PPLN) optical parametric oscillator (OPO) in ns regime. A 3-cm-long LiNbO 3 crystal is segmented in three equal sections; the outer sections are periodically poled. The center segment is of single domain whose refractive index is changed by electro-optic effect. Applying voltage from 0 to )5000 V, the OPO signal and idler waves are tuned from 1.932 to 1.912 lm and 2.368 to 2.40 lm, respectively. The signal and idler waves obtained are difference-frequency-mixed in a 10 mm long AgGaS 2 crystal to produce mid-IR tunable from $10.5 to $9.4 lm, which matches the tuning range of a CO 2 laser.