Home
/
Products
/
Lasers
/
Tunable Lasers
/
Pulsed Dye Lasers

Pulsed Dye Lasers

Wide wavelength coverage from 190 nm to >11 µm
Spectral linewidths <0.03 cm^-1 with no intra-cavity etalon
User-friendly software fully LabVIEW enabled
High output energy >420 mJ with Quanta-Ray^® Nd:YAG >1.4 J per pulse
Quality beam profile with capillary cell option
Grating lift option for grating exchange at the touch of a button
Kinematic mirror blocks for fast pump wavelength change
Touch screen remote for simple, portable laser control

< >

Overview
Applications
Specifications
Drawings
Literature & Downloads
Related Products

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 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 or grating change, thus simplifying the measurement process without sacrificing performance.

The pulsed dye laser family includes options such as grating lift, removable cuvettes, touch screen remote control box, reversible cover, “look-up-table” or auto tracking frequency conversion units, kinematic pump mirror blocks, open source software and CAN bus communications, making these dye lasers the most versatile, technologically advanced lasers on the market.

Cobra

Spectra-Physics’ pulsed dye laser systems are available in three models that differ mainly in their output energies and the availability of accessories such as harmonic generation and wavelength separation. The Cobra, featuring a full range of oscillator choices and a single preamplifier stage, is designed for low energy applications from 5 to 20 mJ.

Cobra-Stretch

The Cobra-Stretch meets output energy needs up to 250 mJ. Based on a two-stage design, the Cobra-Stretch accommodates an extra amplifier stage to obtain higher powers with either a rectangular cell or capillary amplifiers. An optional autotracking bolt-on frequency conversion unit can be used to extend the range of wavelengths. Other harmonic modules can be used to increase the tuning range even further in to the UV and IR.

PrecisionScan

The PrecisionScan is Spectra-Physics’ top-end pulsed dye laser system. Configured with three stages, the PrecisionScan provides the versatility to accommodate two main amplifiers for high-energy applications ranging from >1000 mJ of pump energy at 355 nm and >1400 mJ at 532 nm; or can alternatively house an additional frequency conversion unit for frequency doubling capabilities. Enhanced with standard dual wavelength optics, switching between 532 and 355 nm pump lasers becomes a straightforward procedure.

Applications

Laser induced fluorescence
Lidar and remote sensing
Combustion and atmospheric studies
Laser spectroscopy
Cavity ringdown spectroscopy
CARS
Photolysis

Cobra Dye Laser Specifications

Prism Model Linewidth Specifications
Model	Groove Density	Grating Length	Tuning Range	Linewidth		Efficiency
Cobra-P	–	–	370–900 nm	150 pm	5 cm^-1⁽¹⁾	20%¹

Grating Models Linewidth Specifications
Model	Groove Density	Grating Length	Tuning Range	Linewidth		Efficiency
Cobra-G	1800 lines/mm⁴	60 mm	400–900 nm	3.6 pm	0.10 cm^-1⁽¹⁾	16%¹
	2400 lines/mm⁴	60 mm	350–740 nm	2.7 pm	0.08 cm^-1⁽²⁾	16%²
	3000 lines/mm	60 mm	350–610 nm	2.0 pm	0.06 cm^-1⁽²⁾	16%²
Cobra-LG	1800 lines/mm⁴	90 mm	400–900 nm	2.4 pm	0.06 cm^-1⁽¹⁾	16%¹
	2400 lines/mm⁴	90 mm	350–740 nm	1.8 pm	0.06 cm^-1⁽²⁾	16%²
	3000 lines/mm	90 mm	350–610 nm	1.4 pm	0.05 cm^-1⁽²⁾	16%²
Cobra-D	1800 lines/mm⁴	2 x 90 mm	410–900 nm	1.7 pm³	0.05 cm^-1⁽¹⁾	12%¹
	2400 lines/mm⁴	2 x 90 mm	350–710 nm	1.2 pm³	0.04 cm^-1⁽²⁾	12%²
	3000 lines/mm	2 x 90 mm	350–580 nm	1.0 pm³	0.03 cm^-1⁽²⁾	12%²
Wavelength and Beam Characteristics
Absolute Wavelength Accuracy	<20 pm (<0.5 nm, prism model)
Wavelength Resetability	<4 pm (<50 pm, prism model)
Wavelength Stability	<2 pm/°C (<10 pm/°C, prism model)
Divergence (typical)	1 mrad
Polarization	>98%, vertical
ASE	<0.5%
Pump Energies (grating models)	8–100 mJ @ 532 nm 8–80 mJ @ 355 nm
Pump Energies (prism models)	8–100 mJ @ 532 nm 8–80 mJ @ 355 nm
Requirements
Voltage	110–230 V, single phase, 50 Hz/60 Hz
Computer	One serial port (RS 232 9-pin)
Operating System	Windows 2000 / Windows XP / Windows Vista (32 bit)

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
4. 1800 lines per mm Woods Anomally occurs at 560–571 nm and 2400 lines per mm Woods Anomally occurs at 423–434 nm

Cobra-Stretch Dye Laser Specifications

Prism Model Linewidth Specifications
Model	Groove Density	Grating Length	Tuning Range	Linewidth		Efficiency
Cobra-Stretch-P	–	–	370–920 nm	150 pm	5 cm^-1⁽⁵⁾	30%¹

Grating Models Linewidth Specifications
Model	Groove Density	Grating Length	Tuning Range	Linewidth		Efficiency With Amplifier
Cobra-Stretch-G	1800 lines/mm⁴	60 mm	400–920 nm	3.6 pm	0.10 cm^-1⁽¹⁾	30%¹
	2400 lines/mm⁴	60 mm	370–760 nm	2.7 pm	0.08 cm^-1⁽²⁾	30%²
	3000 lines/mm	60 mm	370–620 nm	2.0 pm	0.06 cm^-1⁽²⁾	30%²
Cobra-Stretch-LG	1800 lines/mm⁴	90 mm	400–920 nm	2.4 pm	0.06 cm^-1⁽¹⁾	30%¹
	2400 lines/mm⁴	90 mm	370–760 nm	1.8 pm	0.06 cm^-1⁽²⁾	30%²
	3000 lines/mm	90 mm	370–620 nm	1.4 pm	0.05 cm^-1⁽²⁾	30%²
Cobra-Stretch-D	1800 lines/mm⁴	2 x 90 mm	410–900 nm	1.7 pm³	0.05 cm^-1⁽¹⁾	27%¹
	2400 lines/mm⁴	2 x 90 mm	370–710 nm	1.2 pm³	0.04 cm^-1⁽²⁾	27%²
	3000 lines/mm	2 x 90 mm	370–580 nm	1.0 pm³	0.03 cm^-1⁽²⁾	27%²
Wavelength and Beam Characteristics
Absolute Wavelength Accuracy	<20 pm (prism model: 0.5 nm)
Wavelength Resetability	<4 pm (prism model: 0.05 nm)
Wavelength Stability	<2 pm/°C (prism model: 10 pm/°C)
Divergence (typical)	0.5 mrad with main amplifier
Polarization	>98%, vertical
ASE	<0.5%
Pump Energies (with EBP cell) with amplifier	50–650 mJ (800 mJ) @ 532 nm 50–400 mJ (500 mJ) @ 355 nm
Requirements
Voltage	110–230 V, single phase, 50 Hz/60 Hz
Computer	Single USB
Operating System	Windows 2000 / Windows XP / Windows Vista

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
4. 1800 lines per mm Woods Anomally occurs at 560–571 nm and 2400 lines per mm Woods Anomally occurs at 423–434 nm
5. For wavelengths <660 nm

PrecisionScan Specifications

Linewidth Specifications
Model	Groove Density	Grating Length	Tuning Range	Linewidth		Efficiency
PrecisionScan-G	1800 lines/mm⁵	60 mm	400–920 nm	3.6 pm	0.10 cm^-1⁽¹⁾	30%¹
	2400 lines/mm⁵	60 mm	370–760 nm	2.7 pm	0.08 cm^-1⁽²⁾	30%²
	3000 lines/mm	60 mm	370–620 nm	2.0 pm	0.06 cm^-1⁽²⁾	30%²
PrecisionScan-LG	1800 lines/mm⁵	90 mm	400–920 nm	2.4 pm	0.06 cm^-1⁽¹⁾	30%¹
	2400 lines/mm⁵	90 mm	370–760 nm	1.8 pm	0.06 cm^-1⁽²⁾	30%²
	3000 lines/mm	90 mm	370–620 nm	1.4 pm	0.05 cm^-1⁽²⁾	30%²
PrecisionScan-D	1800 lines/mm⁵	2 x 90 mm	410–900 nm	1.7 pm³	0.05 cm^-1⁽¹⁾	27%¹
	2400 lines/mm⁵	2 x 90 mm	370–710 nm	1.2 pm³	0.04 cm^-1⁽²⁾	27%²
	3000 lines/mm	2 x 90 mm	370–580 nm	1.0 pm³	0.03 cm^-1⁽²⁾	27%²
Wavelength and Beam Characteristics
Absolute Wavelength Accuracy	<20 pm
Wavelength Resetability	<4 pm
Wavelength Stability	<2 pm/°C
Divergence (typical)	0.5 mrad
Polarization	>98%, vertical
ASE	<0.5%
Pump Energies (with EBP cell)	50–650 mJ @ 532 nm (800 mJ)⁴ 50–400 mJ @ 355 nm (500 mJ)⁴
Pump Energies (with second main amplifier)	300–1400 mJ @ 532 nm 300–1000 mJ @ 355 nm
Requirements
Voltage	110–230 V, single phase, 50 Hz/60 Hz
Computer	Single USB port
Operating System	Windows 2000 / Windows XP / Windows Vista (32 bit)

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
4. With enhanced beam profile (capillary) dye cell
5. 1800 lines per mm Woods Anomally occurs at 560–571 nm and 2400 lines per mm Woods Anomally occurs at 423–434 nm