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38mm
Beam Enhancement Components



MOTORIZED VARIABLE BEAM EXPANDER
Part#: MVBE Series

Motorized Variable Beam expanders collimators can be used to either expand or reduce the laser beam diameter. The MVBE has a variable 2X-8X or 1X-4X expansion range providing precise beam expansion control via RS232 interface. A proprietary 5 lens-element design with 3 lens groups is used to reduce the internal focusing effects for high power applications.

• Diffraction-limited design
• 5 Element design reduces internal focus
• Continous zoom and focus control
• Designed to minimize beam wander
• RS232 Serial Interface
• One Motor Control Unit
• Default Expansion settings pre-programmed
• User-controlled focus adjustment
• Users can define custom expansion settings
• Compact 50mm OD Design
• Windows compatable
• Developed in Labview TM
• GUI (.DLL) can be addressed from C++ or other languages


MVBE Shown Above.

Design:

Other beam expanders contain 4 lenses consisting of 3 lens groups, the first being positive followed by a negative group then a positive group for collimation. This design causes a focus into the second lens group, consequently increasing the possibility of damage to the system.

• Diffraction-limited design
• 5 element design reduces internal focus
• Mechanical design minimizes beam wander
• Continuous zoom and focus adjustments

At Haas Laser Technologies, Inc., we employ a proprietary 5 lens-element design with 3 lens groups to reduce the internal focus. Also, we use fused silica lenses on the two input groups. As a result, our zoom beam expanders tolerate a very high damage threshold.

Damage Threshold:

Standard
248nm - 1600nm: 100MW/cm2 for 10ns pulse width, 1 cm beam dia @ 10Hz
9800nm - 10600nm: 20KW/cm2 pulsed, 1KW/cm2 CW

High Power
248nm - 1600nm: 500MW/cm2
9800nm - 10600nm: 100MW/cm2


Features:

• Default expansion settings pre-programmed
• Users can define custom expansion settings
• User-controlled focus adjustment
• Windows compatible
• RS232 Serial Interface
• Compact 2” outside diameter
• GUI (.DLL) can be addressed from C++ or other languages.

Specifications:

Expansion Range: 2X-8X Continuous or 1X-4X Continuous
Input Aperture: 10mm Max
Output Aperture: 30mm
Beam Wander: 0.15mrad
Wavefront Distortion: <1/4 Wave @633nm
Wavelength: see below
Field of View: +/- 0.5 deg.
Transmission: 95% to 97%
Expansion Change Time: < 10 sec.
Temperature range: -10 to +50 C

Part Number
Clear Aperture
Damage
Expansion
Wavelength
MVBE-30-2-8X-248-425

MVBE-30-1-4X-249-425

30mm
Standard

High

2X-8X

1X-4X

248nm-425nm

248nm-425nm

MVBE-30-2-8X-450-765

MVBE-30-1-4X-450-765

30mm
Standard

High

2X-8X

1X-4X

450nm-675nm

450nm-675nm

MVBE-30-2-8X-600-900

MVBE-30-1-4X-600-900

30mm
Standard

High

2X-8X

1X-4X

600nm-900nm

600nm-900nm

MVBE-30-2-8X-600-901

MVBE-30-1-4X-600-901

30mm
Standard

High

2X-8X

1X-4X

800nm-1200nm

800nm-1200nm

MVBE-30-2-8X-600-902

MVBE-30-1-4X-600-902

30mm
Standard

High

2X-8X

1X-4X

1100nm-1600nm

1100nm-1600nm

MVBE-30-2-10X-9.3

MVBE-30-1-5X-9.3

30mm
Standard

High

2X-10X

1X-5X

9300nm

9300nm

MVBE-30-2-10X-10.6

MVBE-30-1-5X-10.6

30mm
Standard

High

2X-10X

1X-5X

10600nm

10600nm

Laser Beam Bender l Laser Focus Head l Capacitive Height Sensing l Laser Head l Laser Beam Delivery l
Beam Delivery l Beam Expander l Fiber Laser l Laser Process Head l Fiber Laser Process Head

All rights reserved by Haas Laser Technologies, Inc. Copyright 2008