Pulsed Dye Lasers, Cobra0 pages
Cobra
nnnnPULSED DYE LASERS
nnnnThe Cobra Advantage
nnnnWide wavelength coverage from 190 nm to >11 u,m with
nnnnwavelength extension options
nnnnSpectral linewidths <0.03 cnr1 with no intra-cavity etalon
nnnnUser friendly software fully LabView enabled
nnnnOutput energy >20 mJ with Quanta-Ray® Nd:YAG lasers
nnnnAPPLICATIONS
nnnn• Laser induced fluorescence
nnnn• Lidar and remote sensing
nnnn• Combustion and atmospheric studies
nnnn• Laser spectroscopy
nnnn• Cavity ringdown spectroscopy
nnnn• CARS
nnnn• Photolysis
nnnnSpectra-Physics*
nnnnA Newport Corporation Brand
nnnnThe Cobra dye laser is Spectra-Physics' simplest pulsed dye laser system, German
nnnnengineered by our partner firm Sirah GmbH for precision, stability and reliability. Features
nnnnnclude integrated oscillator/pre-amplifier and quick change dye cuvette. Externa
nnnnwavelength conversion units extend the tuning range from the deep UV to the near IR.
nnnnThe Cobra dye laser, with is dual use oscillator cuvette, is designed for low energy
nnnnapplications where 5-20 mJ are required. The laser is well suited for pumping by the smaller
nnnnQuanta-Ray YAGs such as the INDI models, resulting in an overall compact system size.
nnnnCobra incorporates a grazing incidence resonator designed to use the grating's dispersion
nnnntwice per oscillator round-trip, ensuring narrow linewidths with low ASE. An optional
nnnnsecond grating can be added to the resonator for ultra narrow linewidths below 0.03 cm-1
nnnnat 570 nm. The resonator allows narrow line tuning over a broad tuning range without the
nnnnneed for an intra-cavity etalon, thus simplifying the measurement process without
nnnnsacrificing performance
nnnnThe Cobra laser's quartz dye cuvette is held in place by a state-of-the-art cell mount
nnnnmanufactured for stability and precision from high performance alloys and graphite-
nnnnreinforced polymers. Designed for ease of use, the mounted cuvette and the entire dye
nnnncirculator unit can be removed in seconds without tools and without interrupting the dye
nnnnflow loop. This design is ideal for applications that require more than one type of dye. The
nnnnquick change from one dye defined wavelength range to another saves time and eliminates
nnnnthe need for messy dye changes.
nnnnDye flow rates for the standard circulator and cell assemblies are high enough to work up
nnnnto 50 Hz with higher power pumps available for higher repetition rates. For additional
nnnnversatility, the circulator operates with polar and non-polar solvents, as well as solvents of
nnnnvarying viscosities.
nnnnThe Cobra pulsed dye laser is designed for reliability. All oscillator components are
nnnnmounted on a solid block of low thermal expansion stainless steel, mechanically and
nnnnthermally isolated from the outer laser housing. By removing virtually all mechanical and
nnnnthermal stress from the oscillator block and by using opto-mechanics optimized for easy and
nnnnreproducible operation, the oscillator stage requires very limited user adjustment. This
nnnnmechanical stability results in a wavelength resettability for the oscillators of <5 pm, a limit
nnnnset primarily by the Cobra laser's spectral resolution.
nnnnviewport. Family of Brands - Corion® • New Focus™ • Oriel® Instruments • Richardson Gratings™ • Spectra-Physics8
"