Lancaster, D.Goldberg, L.Koplow, J.Curl, R.Tittel, F.2010-08-172010-08-171998Electronics Letters, 1998; 34(13):1345-13470013-5194http://hdl.handle.net/2440/59852A new mid-infrared tunable spectroscopic source based on fibre coupled difference frequency generation in bulk periodically-poled LiNbO₃for trace gas detection is reported. The source mixes the outputs of a fibre coupled external cavity diode laser and a 1083 nm seeded Yb-doped fibre amplifier. Powers up to 0.8 μW are obtained in the 3.8-4.3 μm rangeenCopyright IEE 1998Journal article003000114765153