Newport MKS Supercontinuum Generation Device, Femtosecond 800 nm Pulses SCG-800

The SCG-800 Supercontinuum Fiber Device is a supercontinuum generation device for use with 800 nm femtosecond lasers. It contains 12 cm highly nonlinear, polarization maintaining photonic crystal fiber with zero dispersion at 750 nm, ideally designed for white light super continuum generation. The fiber ends are sealed and mounted in quartz ferrules, with their polarization axis aligned to a line on the end of the device. The nonlinear supercontinuum fiber is mounted in a robust, 25 mm diameter, 120 mm long aluminum housing, which can be easily mounted onto a translation stage. This white light generation device features built-in beam expansion at the end facets, facilitating easy coupling of the laser input beam and a higher damage threshold. Low-noise Supercontinuum Generation Pump the SCG-800 with an 800 nm range femtosecond laser and enjoy the polarized octave spanning output without the hassle of fiber cleaving and handling. Output Example of an SCG-800. Note that the output spectrum is dependent on various characteristics of the pump laser pulses. Tailored Dispersion Curve The tailored dispersion curve of the SCG-800 enables stable, low-noise supercontinuum generation using your existing Ti:Saph laser. Beam Expansion Geometry The housing diameter is 25 mm, and its length is 120 mm, which can be easily mounted onto a Newport translation stage. The device also has a beam expansion geometry at the end facets, facilitating easy coupling of the laser input beam and a higher damage threshold. Recommended Supercontinuum Generation Set-Up The femtosecond pulses from the Ti:Saph laser should be launched through a Faraday Isolator to avoid back reflections from the other optics and the SCG-800. For best performance, (i.e. shortest pulses and highest peak power) it is recommended to use a prism compressor to compensate for the dispersion in the telescope optics and the microscope objective. As the SCG-800 is polarization preserving, polarization control should be used to align the pump light polarization to one of the major axes in the device. Rough alignment can be accomplished using the guideline engraved on the end-facet of the device. Fine-tuning should be done by monitoring the degree of polarization of the output from the SCG-800. Coupling into the device is best realized with a 40X or 60X achromatic microscope objective. Newport also offers a supercontinuum generation kit that includes one SCG-800 with all the necessary optomechanical and optical components.