Laser Shutters & Optical Shutters | NM Laser Products
The source for laser shutters & optical shutters
LST4WBK2 Laser Shutter Specifications | |
Aperture Diameter | 4.0 mm |
Typical Beam Diameter used for Specs | 2.0 mm |
Maximum Optical Power Handling | 25 W Au Mirror, 50 W Dielectric |
Dielectric Optics | 1064 nm (-1), 532 nm (-2), 355 nm (-3), 266 nm (-4), 532/1064 nm (-12) |
Metal Optics | CO2 (-C2), Aluminum (-Al), STD (Au) |
Damage Threshold | 500 mJ/cm2 @ 10 ns, Custom – 2 J/cm2 @ 10 ns |
Open Delay Time | 3 ms |
Open Rise Time | 4 ms |
Open Total Time | 7 ms |
Close Delay Time | 4 ms |
Close Fall Time | 7 ms |
Close Total Time | 11 ms |
LST4WBK2 Laser Shutter Specifications | |
Minimum FWHM Exposure Capability | 25 ms |
Maximum Shutter Repetition Rate | 20 Hz |
Thermal Power Dissipation Holding Open | 3 W |
Thermal Power Dissipation, Cycling | 5 W @ 5 Hz |
Winding Resistance | 8 Ohms |
Winding Inductance | 11 mH |
Position Sensors | Standard, TTL Logic, Require 5 VDC @ 30 mA |
Cable/Wire Type and Length | 18 inches, 6 leads 22 g |
Mounting Surface for Thermal Sinking | Bottom Threaded Surface |
Weight | 5 oz. |
Size (see mechanical drawing) | 3.00 x 1.48 x 0.75 inches |
Note: 3-D solid model available upon request (Solidworks or .stp file). Contact us. Specifications updated on March 30, 2021 |
Options are available using a suffix code system. Many options cannot be installed after manufacture, so choose carefully. Standard mirror is gold for IR use. The –AL suffix is for aluminum mirror, best for UV and visible. The –D123 mirror is a triple line YAG mirror for 355, 532, 1064 nm. The –C2 suffix is for CO2 use. Unit is not designed for upside down operation (w/r to photo), but can be adjusted for this orientation upon request. Other options upon request.
Special Considerations for this model include careful attention to mounting around high magnetic fields, such as Faraday Rotators. The position sensors are TTL logic, so standard handling precautions for electronic static control should be observed.
Restricted use for this model include specific laser wavelengths matching mirror options listed on serial label, high quality thermal mounting, and adequate hold voltage at user’s maximum temperature.
See the Mechanical Drawing tab for dimensions. Also see the Application Notes in the Technical Information menu for important operational issues including: thermal mounting, user-built circuits, polarization, lifetime, jitter, vacuum operation, and contamination. See the Product Matrix page to compare laser shutter models.
Aperture Size Range | 4 mm |
Optics | Aluminum, Dielectric, Gold |
Wire Length | Any length |
Wire/Cable Type Wire Gauge | Teflon, Vinyl |
Connector | Any 6 pin connector |
Size | 3.00 x 1.48 x 0.75 in., note: minimal size change can be designed |
Identification | Engraving, Labels |
MODEL | LST4WBK2 |
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Classification | Safety/Process |
Cable or Wires – Length | 18 inches |
Cable/Wire Termination, Std. | MTA-100, AMP, P/N 643813-60 |
Recommended Controller and Voltage Present | Capacitor Discharge 24 V, 24 V PWM, or CX4000B |
Power Supply | 24 VDC, 3 Amp Rating |
Electrical Drive Circuit | Boost Open – 24 V @ 10 ms, Hold Open – 5 V, Delay Close – 8 ms, Brake Close – 24 V for 1 ms |
Winding Resistance | 8 Ohms Nominal |
Winding Inductance | 10 mH |
Gravity Considerations | No Restrictions |
Typical Minimum Hold Open Voltage, Room Temperature | 4 V |
Typical Hold Open Power Dissipation as Heat | 3 W |
User Power Supply Notes | 24 VDC, 3 A Rating, Surge Capacitor on output |
User Drive Circuit/Cap Discharge | 24 V, C = 2200 uF, R = 30 ohm, Flyback diode 1N4001 BUILT-IN STD |
Nominal Winding Inductance | 10 mH |
Color Codes and Function of Wires | PIN 1 White, + to winding (observer polarity) |
PIN 2 Black, – to winding | |
PIN 3 Red, Supply Regulated +5.0 VDC — 30 mA | |
PIN 4 Yellow, NC Output from Sensor – TTL (reads high when shutter closed) | |
PIN 5 Orange, NO Output from Sensor — TTL (reads high when shutter open) | |
PIN 6 Blue, 5V Return and Sensor Ground |
Read sensor outputs with reference to the blue ground wire. These outputs are totem-pole buffered TTL, seeking a load of ~10 K ohms. Typical output is 4.5 V. Do not try to draw more than about 5 mA from the Yellow or Orange Outputs, or the voltage will load down.