Modulation, Exposure and Pulse Gating Shutters

This family of shutters offers the fastest switching speeds and high sustained repetition rates. Modulation can be as high as 500 Hz, with exposures as short as 800 microseconds at FWHM. Single pulse extraction can be made from 2 KHz or lower pulse trains.

The fastest speeds are for the smaller aperture diameters, starting at 2.3 mm. Usually, the shutter package size and optical power rating escalates with increasing aperture size. Switching speeds slow with larger apertures, in a non-linear fashion.

The majority of packages are designed for common applications with commercially available lasers and high irradiance lamp sources.

Models are arranged in formats that indicate how the beam is intercepted by the moving flexure optic; the LS Models use near grazing incidence reflection principles and the LST Models use 45 degree incidence.

In general, the LS models move less mass, providing faster switching speeds. They also provide higher damage threshold since the beam is spread over a large elliptical area of the flexure optic.

Angles of incidence range from about 82 to 75 degrees, increasing the area of incidence and reducing the fluence by factors of 4-6. If the laser source is polarized, the damage threshold and optical power handling is further increased by aligned the polarization vector to the label on the product input aperture. This takes advantage of higher reflectivity of S polarization for near grazing incidence.

The absorber can handle a great deal of power, and usually the optical power rating is limited by the flexure optic.

The standard coating is a broadband aluminum coating. Gold is available for exclusive use in the IR by adding suffix −IR to the model number. At CO2 wavelengths, absorbers change as well, and the −C2 suffix is attached to the model number. Some models also have a suffix −P for high energy, low rep rates, typically YAG systems.

Some of the LST models, such as the LSTXY, are designed with dielectric optics and diffusers to handle high energy Q-Switched sources. Damage threshold ratings require dielectric optics. These models also have suffix designations for various dielectric mirror wavelengths.

Most models in this high speed family do not have position sensor options. Cable lengths on the shutters are nominally 8 feet. Extended cables can be ordered, with some limits due to voltage drop with distance.

These shutter models require more electrical power to provide fast switching speeds, and therefore dissipate more heat. Proper thermal mounting is mandatory to achieve stated performance and to avoid damage. See Thermal Mounting in the application notes section.

The fastest models require the CX2250 model controller. Larger aperture models can benefit from the dampened movement control provided by the CX4C controller. For some smaller aperture models, our CX2450B controller can provide lower speed operation, but check with factory sales engineers for a compatibility check.

Series	Aperture	Time to Open
BDS25	25 mm	13.0 msec
CS25	25 mm	9.0 msec
CS35	35 mm	13.0 msec
CS45	45 mm	14.0 msec
CS65	65 mm	29.0 msec
CS90	90 mm	70.0 msec
LS2	2 mm	300 µsec
LS3	3 mm	500 µsec
LS6	6 mm	700 µsec
QCS45	45 mm	14.0 msec
UHS1	1 mm	180 µsec
VS14	14 mm	1.5 msec
VS25	25 mm	3.0 msec
VS35	35 mm	13.0 msec
XRS14	14 mm	20.0 msec
XRS25	25 mm	10.0 msec
XRS6	6 mm	3.2 msec

MICROSCOPE MOUNTING SYSTEMS :
Mounting options available for Zeiss, Nikon, Olympus, and Leica type microscopes.

VIDEO MOUNTING SYSTEMS :
Can be interfaced with popular video systems for many types of video systems including "F-C", "C", and "T" video mounts.

UNIVERSAL MOUNTING SYSTEMS :
These universal mounting rings to allow our line of shutter devices to be easily integrated into user applications. These rings can be utilized from our 1mm aperture to the 90mm size.

With its new housing design, dual RJ45 RS-232 addressable serial interface, and new ODU push-lock shutter connector, (among other enhancements) provide a shutter driver unit even more versatile for the most demanding shutter applications.



Note :

The VMM series of controllers will no longer be available in the European Union.

• CCS-3 Open Frame Shutter Driver
Smallest UNIBLITZ shutter driver Open frame printed circuit card suitable for OEM applications
• Power input: +12 VDC at 1 A
CCS-5 Open Frame Shutter Driver Open frame printed circuit card suitable for OEM applications
• Power input: +24 VDC at 1.5 A
Direct or opto-isolated input control D880 Open Frame Shutter Driver Open frame printed circuit card suitable for OEM applications
• Power input: +24 VDC at 1.5 A
Pluggable 12 position I/O connector 122-BP Open Frame Shutter Driver Open frame printed circuit card mounted to an aluminium chassis
• Power input: 115/230 VAC 50/60 Hz
Pluggable 9 position I/O connector and 3 position AC connector