Optical Power Handling: 100 W
High Rep Rate: 15 Hz
Aperture: 15 mm
High LIDT: 2 J/cm2
Optics: Metal & Dielectric
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Laser Safety
High Energy Pulse Gating
Rep-Rate Divider
Large Beam Application
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Optical Specifications

Aperture Size 15 mm
Typical Beam Diameter 5-10 mm
Optics Options -1 (1064nm), -2 (532 nm), -3 (355 nm)
Gold Optics, Aluminum Optics
Maximum Power Handling 100 W (Glass Optics)
30 W (Gold and Al Optics)
Damage Threshold 2 J/cm^2 at 10 ns (Glass Optics)
500 mJ/cm^2 at 10 ns (Gold/Al Optics)

Performance Specifications

Open Delay Time 10 ms
Open Rise Time 20 ms
Open Total Time 30 ms
Close Delay Time 10 ms
Close Fall Time 20 ms
Close Total Time 30 ms
Min. FWHM Exposure 50 ms
Max. Repetition Rate 10 Hz (CUSTOM – 15 Hz)
Noise / Jitter Requirement Calibration Available
Noise Sensitivity Calibration Available
Shock and Vibration Sensitivity Calibration Available
Lifetime Over 100 Million Cycles

Thermal Specifications

Power Dissipation Holding Open 5 W
Power Dissipation Cycling 16 W @ 10 Hz
Max. Operating Temperature 50 C
Mounting Surface Datum A, Datum B

Custom Options

Dual Position Sensors Available
15 Hz Repetition Rate Available
Diverting Port to Power Meter Available

Electrical Specifications

Power Supply 24 VDC, 2 AMP RATING
Electrical Drive Circuit Boost Open- 24V for 25 ms
Hold Open – 8 V
Delay – 17 ms
Brake – 24V for 6ms
Winding Resistance 11 Ohms @ Room Temp.
Winding Inductance 25 mH
Position Sensors Logic TTL, Require 5VDC @ 30mA
Wire Leads Number, Std. Six, 26 AWG Teflon
Cable Length 18 in.
Cable/Wire Termination MTA 100
Recommended Controller CX4000B

Wire Pin # - Color

1 – White Power Winding (+)
2 – Black Power Winding (-)
3 – Red Sensor Supply, 5 VDC(+) – 30 mA
4 – Yellow Normally Open Sensor (HI – Open)
5 – Orange Normally Closed Sensor (HI – Close)
6 – Blue 5V Return and Sensor Ground


Size 5.5 in. x 1.0 in. x 2.0 in.
Weight ~1 lb.
Classification Safety/Process
Gravity Considerations None
Specifications Date March 23, 2023


The LST500 laser shutter model is designed for use as a laser safety interlock and processing applications. The shutter provides TTL output position sensors for the open and closed states as standard equipment. Compatible system controllers are CX4000B or user-built circuits designed around 24 VDC @ 2 A. Options are available using a suffix code system. Many options cannot be installed after manufacture, so choose carefully. Choose the – IR suffix for IR use, starting at about 700 nm. The standard over-coated aluminum mirror is good from deep UV to about 700 nm. Special dielectric mirrors are available for OEM applications.