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Supercontinuum Generation Fiber Devices

Supercontinuum Generation Fiber Devices
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Supercontinuum Generation Fiber Devices - 1

F i b e r O p t i c S o u r c e s 269 Email: sales@newport.com • Web: newport.com BROADBAND SOURCES SCG-800 Supercontinuum Fiber Module Newport's new SCG-800 is a polarization maintaining supercontinuum 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. 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 fiber is mounted in a robust, 25mm diameter, 120 mm long aluminum housing, which can be easily mounted onto a translation stage. The device features built-in beam expansion at the end facets, facilitating easy coupling of the laser input beam and a higher damage threshold. Recommended Set-Up for Supercontinuum Generation The femtosecond pulses from the 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 axis 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. • Dispersion-engineered nonlinear PM PCF • Optimized for 800nm fs pumping • Robust 25mm Aluminum housing • Sealed, cleanable end facets • Direction of polarization indicator • End-facet beam expansion • Compatible with Newport's VB-1 optical mount • Zero dispersion @ 750nm -50 -60 -70 -80 400 600 800 1000 Wavelength [nm] Coupled average power: 67 mW Wavelength: 800nm Pulse duration: 50 fs Rep. Rate: 79MHz 1200 1400 1600 Output [dB] Output Example Ordering Information Model Description SCG-800 Self Contained Supercontinuum Generator for Femtosecond 800nm pulses Supercontinuum

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