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Pulsed Dye Lasers, Cobra

Pulsed Dye Lasers, Cobra
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Wide wavelength coverage from 190 nm to >11 u,m with wavelength extension options Spectral linewidths <0.03 cnr1 with no intra-cavity etalon User friendly software fully LabView enabled Output energy >20 mJ with Quanta-Ray® Nd:YAG lasers • Laser induced fluorescence • Lidar and remote sensing • Combustion and atmospheric studies • Laser spectroscopy • Cavity ringdown spectroscopy A Newport Corporation Brand The Cobra dye laser is Spectra-Physics' simplest pulsed dye laser system, German engineered by our partner firm Sirah GmbH for precision, stability and reliability. Features nclude integrated oscillator/pre-amplifier and quick change dye cuvette. Externa wavelength conversion units extend the tuning range from the deep UV to the near IR. The Cobra dye laser, with is dual use oscillator cuvette, is designed for low energy applications where 5-20 mJ are required. The laser is well suited for pumping by the smaller Quanta-Ray YAGs such as the INDI models, resulting in an overall compact system size. Cobra incorporates a grazing incidence resonator designed to use 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 ultra narrow 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, thus simplifying the measurement process without sacrificing performance The Cobra laser's quartz dye cuvette is held in place by a state-of-the-art cell mount manufactured for stability and precision from high performance alloys and graphite- reinforced polymers. Designed for ease of use, the mounted cuvette 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 dye defined 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 circulator operates with polar and non-polar solvents, as well as solvents of varying viscosities. The Cobra pulsed dye laser is designed for reliability. 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 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 Cobra laser's spectral resolution. viewport. Family of Brands - Corion® • New Focus™ • Oriel® Instruments • Richardson Gratings™ • Spectra-Physics8

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Cobra Cobra Optical Layout (Prism Model) Mirror (Pre-amp) Mirror (Delay) Beam Splitter Pump Beam Mirror (Delay) Cylindrical Lenses Output Coupler Beam Reversion Dye Output Beam Expansion Dispersive Prisms 20 mm Dye Cell Tuning Mirror Cobra Dimensions 22.4 (570) 19.7 (500) 1.4 (35) Side View 1.45 (37) Polarization 37 17.9 (457) 6.29 (160) 13.14 (334) Dye Laser Output End 19.44) (494) Pump Laser Input End Dimensions in inches (mm) 8.14 .. 9.44 (207 .. 240) 7.75 .. 9.05 197.. 230 12.28 .. 13.58 (312 .. 345) 154 6.1 (154)

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Cobra Specifications Prism Model Linewidth Specifications Model_Groove Density_Grating Length_Tuning Range_Linewidth_Efficiency Grating Models Linewidth Specifications Groove Density Grating Length Tuning Range Wavelength and Beam Characteristics Absolute Wavelength Accuracy Wavelength Resetability Wavelength Stability <2 pm/°C (<10 pm/°C, prism model] Divergence (typical] Pump Energies (grating models] Pump Energies (prism models] Operating System Windows 2000 / Windows XP / Windows Vista (32 bit] 2. At 570 nm (peak Flhodamine 6G) pumped at 532 nm 3. Exact linewidth depends weakly on...

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Cobra SO ) l) LD S St y St y ry ry l9 l9 86 7 (D M (E th an o SO ) l1 1 St y ry ry l8 l8 St y ry (D M (E th an o 2 St y Py Py Efficiency (%) 25 rid in e rid in e 1 30 l) Flu o Py res rro cei Rh m n 2 od . 5 7 a 80 Py min r ro e 6 Su m. G lf 5 Rh orh 97 od od a a M mi min i x . ne e B Rh o DC dam M ine (E 1 th 01 an ol DC ) M (D M SO ) 532 nm-pumped Dye Tuning Curves1 20 15 10 5 550 600 650 700 750 800 850 900 Wavelength (nm) Efficiency (%) 3 15 7 in 30 ar in um ar Co um Co um Co arin um 12 0 ar in 2 Co um ar in 47 Co um ar in 10 2 Co Ex 20 al ite Ex 37 al 6 Ex ite al 38 ite 4 38 M 9 ix .3...

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