• 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

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

• 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