60 mm Cage System Beam Blocks


LB2

Beam Block

Application Idea

LB2 Beam Block in 60 mm Cage System
Used to Block IR Beam Transmitted
Through Dichroic Beamsplitter

  • Solutions for up to 500 W (CW) or 25 J/cm2 (Pulsed)
  • Effective Over 1 - 12 μm Wavelength Range
  • Essential Component for Laser Lab Safety

LB2L

Liquid-Cooled Beam Block

Related Items


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LB2 Beam Block Mounted on a
Ø1/2" Post with a 60 mm Cage System

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LB2 Beam Block with
Faceplate Removed

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Base of LB2L Beam Block

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LB2L Beam Block with Tubing Connectors

Features

  • Laser Safety Devices Reduce Risk of Laser Damage
  • IR Beam Blocks Effective Over 1 - 12 µm Wavelength Range
  • Solutions for up to 500 W (CW) or 25 J/cm2 (Pulsed)
  • 60 mm Cage System Compatible
  • Post-Mountable

Thorlabs' LB2(/M) and LB2L(/M) Beam Blocks absorb CW and pulsed laser beams over the 1 - 12 µm wavelength range. Each unit features a large 1.97" x 1.97" (50.0 mm x 50.0 mm) entrance aperture with a faceplate serves to protect the graphite pad. These beam blocks have 4-40 taps for integration into our 60 mm cage system.

The LB2(/M) IR Beam Block is recommended for use with average powers that do not exceed 80 W (CW) or energy densities that do not exceed 25 J/cm2 (pulsed; performance of individual units may vary due to material properties). It also offers three 8-32 (M4) taps on one side for mounting to Ø1/2" posts or Ø1" posts. The 1.97" x 1.97" (50.0 mm x 50.0 mm) entrance aperture can be widened to 2.72" x 1.97" (69.0 mm x 50.0 mm) by removing the front faceplate using a 1.5 mm hex key (not included).

The LB2L(/M) Beam Block is designed to be liquid cooled, allowing it to handle a maximum average power of 500 W (CW) when used with a 1 L/min water supply at 25 °C. Similar to the LB2(/M) beam block, it can also be used with pulsed sources with energy densities up to 25 J/cm2 (performance of individual units may vary due to material properties). This block has fittings for 1/4" (6 mm) outer diameter hoses; for example, our HPU6 polyurethane hose is compatible with the LB2L block. The one-touch fittings allow the user to easily push the tubing into the connector when attaching a water or coolant supply such as our LK220 liquid chiller. When used with this chiller, the recommended maximum average power is 250 W (CW). The block can withstand pressure up to 145 psi and can be used with water, ethanol-based coolants, or glycol-based coolants, such as our CDTX Coolant. Each unit offers twelve 8-32 (M4) taps, three on each side, for mounting to Ø1/2" posts or Ø1" posts.

Please note that the LB2(/M) and LB2L(/M) beam blocks contains graphite and may not be suitable for all lab environments. All beam traps will become hot to the touch with beam powers above 10 W.

Item # Wavelength
Range
Absorptive
Material
Laser Type Max Average
Power
Max Average
Power Density
Max Energy
Density
Entrance
Aperture
Operating
Temperature Range
Pressure
Rating
Tubing Outer
Diametera
LB2(/M) 1 - 12 µm Graphite CW and Pulsed 80 Wb 25 kW/cm2 c 25 J/cm2 c,d 1.97" x 1.97"
(50.0 mm x 50.0 mm)
N/A N/A N/A
LB2L(/M) 500 We 25 kW/cm2 0 °C to 150 °C 145 psi 1/4" (6 mm)
  • Tubing Not Included
  • Housing temperature will exceed 100 °C above 45 W input power.
  • Performance of individual units may differ due to material variability.
  • At 1064 nm, 10 ns, 10 Hz
  • At a flow rate of 1 L/min at 25 °C water temperature. The max recommended power using the LK220 Thermoelectric Liquid Chiller is 250 W.

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60 mm Cage System Beam Blocks

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
LB2 Support Documentation
LB2Beam Block, 1 - 12 µm, 80 W Max Avg. Power, Pulsed and CW, 8-32 Taps
$180.56
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LB2L Support Documentation
LB2LCustomer Inspired! Liquid-Cooled Beam Block, 1 - 12 µm, 500 W Max Avg. Power, Pulsed and CW, 8-32 Taps
$474.30
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+1 Qty Docs Part Number - Metric Price Available
LB2/M Support Documentation
LB2/MBeam Block, 1 - 12 µm, 80 W Max Avg. Power, Pulsed and CW, M4 Taps
$180.56
Today
LB2L/M Support Documentation
LB2L/MCustomer Inspired! Liquid-Cooled Beam Block, 1 - 12 µm, 500 W Max Avg. Power, Pulsed and CW, M4 Taps
$474.30
Today