Tunable simultaneous dual-wavelength laser at 1.9 and 1.7 μm based on KTiOAsO4 optical parametric oscillator
✍ Scribed by J.F. Yang; S.D. Liu; J.L. He; X.Q. Yang; F.Q. Liu; B.T. Zhang; J.L. Xu; H.W. Yang; H.T. Huang
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 105 KB
- Volume
- 8
- Category
- Article
- ISSN
- 1612-2011
No coin nor oath required. For personal study only.
✦ Synopsis
A simultaneous dual-wavelength eye-safe laser at around 1.9 and 1.7 μm based on only a single KTiOAsO4 (KTA) intracavity optical parametric oscillator (IOPO) is firstly reported. The dual-wavelength-IOPO is driven by an acoustooptic (AO) Q-switched Nd:YAG laser, which is simultaneously oscillated at the radiations of 1.3 and 1.06 μm. Within the KTA-IOPO cavity, the signal output waves of IOPO at the wavelength of 1.9 and 1.7 μm are pumped by the 1.3 and 1.06 μm radiations from Nd:YAG laser, respectively. With the laser diode pumped power of 100 W and the pulse repetition rate of 4 kHz, the maximum average output power of 1.3 W at 1895 nm with the pulse duration of 30 ns and that of 0.9 W at 1715 nm with the pulse duration of 18 ns are obtained. With different diode pump power, the central wavelength of IOPO signal light at 1.9 μm is tunable from 1850 to 1895 nm, while the other signal wave at 1.7 μm is from 1650 to 1715 nm. Average output power of IOPO signal waves, W 1.5 1.0 0.5 5 1 0 1 5 Pulse repetition rate, kHz output power of ~ 1715 nm output power of ~ 1895 nm
The output power of 1.9 μm and 1.7 μm versus the pulse repetition rate (PRR) at the diode-pump power of 100 W