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Cobra, Cobra-Stretch and PrecisionScan Dye Lasers Series

Cobra, Cobra-Stretch and PrecisionScan Dye Lasers Series
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Cobra, Cobra-Stretch and PrecisionScan Dye Lasers Series - 1

Cobra, Cobra-Stretch and PrecisionScan Dye Lasers The Pulsed Dye Laser Advantage • Wide wavelength coverage from 190 nm to >11 ìm • Spectral linewidths <0.03 cm-1 with no intra-cavity etalon • User-friendly software fully LabVIEW enabled • High output energy >250 mJ with Quanta-Ray® Nd:YAG >1 J per pulse • Quality beam profile with capillary cell option • High repetition rate operation with Spectra-Physics Navigator™ diode-pumped solid state laser Pulsed Dye Laser Series Spectra-Physics’ state-of-the-art pulsed dye laser systems are German engineered by our partner firm Sirah GmbH for precision, stability and reliability. At the heart of the laser system is a grazing incidence resonator designed to utilize the grating’s dispersion twice per oscillator round-trip, ensuring narrow linewidths with low ASE. An optional second grating can be added to the resonator for ultranarrow linewidths below 0.03 cm-1 at 570 nm. The resonator allows narrow-line tuning over a broad tuning range without the need for an intra-cavity etalon or grating change, thus simplifying the measurement process without sacrificing performance. The laser’s quartz dye cuvettes are held in place by state-ofthe- art cell mounts manufactured for stability and precision from high performance alloys and graphite-reinforced polymers. Designed for extreme ease of use, the mounted cuvettes and the entire dye circulator unit can be removed in seconds without tools and without interrupting the dye flow loop. This design is ideal for applications that require more than one type of dye. The quick change from one dyedefined wavelength range to another saves time and eliminates the need for messy dye changes. Dye flow rates for the standard circulator and cell assemblies are high enough to work up to 50 Hz with higher power pumps available for higher repetition rates. For additional versatility, the circulators operate with polar and non-polar solvents, as well as solvents of varying viscosities. Reliability is inherent in the laser system design. All oscillator components are mounted on a solid block of low thermal expansion stainless steel, mechanically and thermally isolated from the outer laser housing. By removing virtually all mechanical and thermal stress from the oscillator block and by using opto-mechanics optimized for easy and reproducible operation, the dye laser’s oscillator stage requires very limited user adjustment. This mechanical stability results in a wavelength resettability for the oscillators of <5 pm, a limit set primarily by the laser’s spectral resolution.

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Cobra, Cobra-Stretch and PrecisionScan Dye Lasers Series - 2

Cobra Dye Laser Specifications Notes 1. For wavelength <660 nm 2. Resonator and pre-amplifier at 570 nm (peak Rhodamine 6G) pumped at 532 nm 3. Resonator and pre-amplifier at 625 nm (peak DCM) pumped at 532 nm 4. Exact linewidth depends weakly on wavelength; value given for 450 nm Applications • Laser induced fluorescence • Lidar and remote sensing • Combustion and atmospheric studies • Laser spectroscopy Linewidth Specifications Oscillator Dispersion Option Tuning Range Linewidth Efficiency Three Quartz Prisms 370–900 nm 0.15 nm1 5 cm-1 @ 570 nm 20%2 Diffraction Gratings Lines per mm...

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Cobra, Cobra-Stretch and PrecisionScan Dye Lasers Series - 3

Cobra-Stretch Dye Laser Specifications Notes 1. For <660 nm wavelength 2. Resonator and pre-amplifier at 570 nm (peak Rhodamine 6G) pumped at 532 nm 3. Resonator, pre- and main amplifier at 570 nm (peak Rhodamine 6G) pumped at 532 nm 4. Resonator and pre-amplifier at 625 nm (peak DCM) pumped at 532 nm 5. Resonator, pre- and main amplifier at 625 nm (peak DCM) pumped at 532 nm 6. Exact linewidth depends weakly on wavelength; value given for 450 nm Prism Cylindrical lenses Telescope 40 mm Grating dye cell Beam Reversion 20 mm dye cell Reversing Prism Cobra Cobra-Stretch PrecisionScan Pump...

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Cobra, Cobra-Stretch and PrecisionScan Dye Lasers Series - 4

DS-12071 (09/09) PrecisionScan Dye Laser Specifications Notes 1. At 625 nm (peak DCM) pumped at 532 nm 2. At 570 nm (peak Rhodamine 6G) pumped at 532 nm 3. Exact linewidth depends weakly on wavelength; value given for 450 nm Pulsed Dye Laser Dimensions A B Side View 154 Input End (Pump Laser) 37 457 494 312 .. 345 197..230 A B 35 Side View 154 Polarization Output End (Dye Laser) Input End (Pump Laser) 37 457 494 160 334 207.. 240 312 .. 345 197..230 Dimensions in mm A B 35 Side View 154 Polarization Output End (Dye Laser) Input End (Pump Laser) 37 457 494 160 334 207.. 240 312 .. 345...

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