Cobra-Stretch

Linewidth Specifications

Dispersion Option Tuning Range Linewidth Efficiency
1) for wavelength < 660 nm
2) resonator, pre- and main amplifier at 570 nm (peak Rhodamine 6G) pumped at 532 nm
3) resonator, pre- and main amplifier at 625 nm (peak DCM) pumped at 532 nm
4) exact linewidth depends weakly on wavelength; value given for 450 nm
Three Quartz Prisms 370..920 nm 0.15 nm 1) 5 cm-1 @ 570 nm 30 % 2)
1800 lines / mm, 60 mm 400..920 nm 3.6 pm 0.1 cm-1 @ 625 nm 30 % 3)
1800 lines / mm, 90 mm 400..920 nm 2.4 pm 0.06 cm-1 @ 625 nm 30 % 3)
2400 lines / mm, 60 mm 370..760 nm 2.7 pm 0.08 cm-1 @ 570 nm 30 % 2)
2400 lines / mm, 90 mm 370..760 nm 1.8 pm 0.06 cm-1 @ 570 nm 30 % 2)
3000 lines / mm, 60 mm 370..620 nm 2.0 pm 0.06 cm-1 @ 570 nm 30 % 2)
3000 lines / mm, 90 mm 370..620 nm 1.4 pm 0.05 cm-1 @ 570 nm 30 % 2)
Dual 1800 lines / mm 410..900 nm 1.7 pm 4) 0.05 cm-1 @ 625 nm 27 % 3)
Dual 2400 lines / mm 370..710 nm 1.2 pm 4) 0.04 cm-1 @ 570 nm 27 % 2)
Dual 3000 lines / mm 370..580 nm 1.0 pm 4) 0.03 cm-1 @ 570 nm 27 % 2)

Wavelength and Beam Characteristics

5) with enhanced beam profile (capillary) dye cell
Absolute Wavelength Accuracy < 15 pm (prism models: 0.5 nm)
Wavelength Resetability < 2 pm (prism models: 0.05 nm)
Wavelength Stability < 1,5 pm / °C (prism models: 10 pm / °C)
Divergence (typical) 1.0 mrad (0.4 mrad with main amplifier)
Polarization > 98 % (vertical)
ASE < 0.5 %
Pump Energies 8..150 mJ @ 532 nm, resonator, pre-amplifier only
8..80 mJ @ 355 nm, resonator, pre-amplifier only
50..650 mJ @ 532 nm, with main amplifier (800 mJ5))
50..400 mJ @ 355 nm, with main amplifier (500 mJ5))

Requirements

Voltage 110..230 V, single phase, 50 Hz / 60 Hz
Computer Control XP / Vista / Windows 7 / Windows 8 / Windows 10 (32 & 64 bit), USB port

Options

Main amplifier for higher output energy
Double wavelength pump optic (532 nm, 355 nm)
Autotracking frequency doubling / mixing units (external housing)
External mixing units
Automatic exchange of gratings
Piezo wavelength control
Dynamic mode option
Double bandwidth option

 

Optical Layout

 

Optical Layout Cobra-Stretch

Optical Layout Cobra-Stretch

Dimensions

Dimensions Cobra-Stretch

Dimensions Cobra-Stretch

All Dimensions in mm. Specifications are subject to change without notice.

Literature & Downloads

Datasheet Cobra-Stretch
Datasheet Piezo Wavelength Control
Datasheet Grating Lift
Datasheet Double Bandwidth
Video: Grating Lift
Video: Swapping Pump Optics
Video: Dye Cell Mechanics