A.K.Y. Ngai

Automatically tunable continuous-wave optical parametric oscillator for high-resolution spectroscopy and sensitive trace-gas detection

F. Harren, S. Persijn, A. Ngai, 2006 .

Combined wide pump tuning and high power of a continuous-wave, singly resonant optical parametric oscillator

S. E. Bisson, F. Harren, M. van Herpen, 2004 .

Continuous wave optical parametric oscillator for quartz-enhanced photoacoustic trace gas sensing

Frank K. Tittel, Klaus J. Boller, Stefan Persijn, 2007 .

Mid-infrared continuous wave cavity ring down spectroscopy of molecular ions using an optical parametric oscillator

Stefan Persijn, Frans J. M. Harren, H. Verbraak, 2007 .