Products

Laser optics- laser beam expander

Short Description:


Production capability: 1000-3000pcs per month

Payment : Paypal, Western Union, T/T

Shipping method: Express, Airfreight, Ocean freight


We can provide

·Competitive Prices

·Quality ISO:9001-2015 Certified

·ROHS Compliant

·Short lead time

·Standard size stock available

·Fast Prototyping

·Custom Optics Fabrication

·Quality assurance

·Warranty & After sales service


Product Detail

Product Tags

Description

An optical beam expander (also known as a collimator or up-collimator) is a two, or more, element optical system that changes the divergence characteristics and the size of the beam.  They take a beam of light and expand its size. They are also used to reduce the beam diameter which may be useful when using acousto- or electro-optic modulators.  They are typically used in systems with a long beam path to keep the beam collimated, or to vary the focus spot size for a given lens.

A laser beam expander works in such a way that the input beam is expanded to a larger diameter. The concepts are derived from the fundamental principals of telescopic design.  When a collimated laser beam is input to one side of the beam expander, a collimated beam is output from the opposite end. The object space and image space rays converge at infinity. This characteristic defines a beam expander as an afocal system.

Laser beam expanders increase the diameter of a collimated input beam to a larger collimated output beam for applications such as laser scanning, interferometry, and remote sensing. Contemporary laser beam expanders are afocal systems developed from well-established optical telescope fundamentals. In such systems, the object rays enter parallel to the optical axis of the internal optics and exit parallel to them. This means that the entire system does not have a focal length.

These Galilean design beam expanders provide an adjustable focus for collimation at varying wavelengths, and to control divergence correction and focusing. They are adaptable for complex applications requiring increased power density at the focal point, beam guidance over long distance, dual wavelengths (1064nm and 532nm), high power laser energy, and large aperture needs.

Feature

1. Typically aluminum construction to minimize thermal distortion

2 .Designed to be rugged and self-supporting

3. Easy to use

4. Provide accurate, unobstructed expansion for any collimated input source.

Application

1. Laser Micromachining / Laser Processing

2. Laser Structuring of Foils

3. Laser Scribing

4. Cutting of Solar Cells

5. Micro Drilling

6. Laser Marking

7. Lidar Systems

8. Beam Condensing

9. Remote Sensing

10. Propagation Studies

11. Collimation of Laser Harmonics

12. Interferometers

13. Collimation of High Power Lasers

Product Parameter

A laser beam expander is designed to either decrease the laser's beam spot size at large distances or produce a larger collimated output laser beam. Laser beam expanders come in two main types: Keplerian laser beam expander or a Galilean laser beam expander. In its simplest form a Galilean beam expander consists of a postive and a negative focal length lens whereas the Keplerian consists of two postive focal length lenses.  More advanced forms of laser beam expander utilise more than two lens elements to correct for spherical abberation. Both beam expander designs provide a certain anular magnifaction, called expander power. The beam diameter is first increased in size by this power and then the beam divergence is reduced by the same power.  This combination yields a beam that is not only larger, but one that is highly collimated.  The result is a smaller beam at large distances when compared to the laser alone.  The laser beam expander is also useful when a larger collimated beam is required over a given range.

Model No.

Magnification

Length(mm)

Outer diameter(mm)

Max input beam (mm)

Max output beam (mm)

Connect(mm)

10.6-2Z

2

30

24

7

14

f24

10.6-2ZM

2

30

24

7

14

M22x0.75

10.6-2.5Z

2.5

40

24

5.6

14

f24

10.6-2.5ZM

2.5

40

24

5.6

14

M22x0.75

10.6-3Z

3

50

24

5.3

16

f24

10.6-3ZM

3

50

24

5.3

16

M22x0.75

10.6-4Z

4

69.7

31

5.75

23

f31

10.6-4ZM

4

69.7

31

5.75

23

M22x0.75

10.6-5Z

5

89.8

31

4.6

23

f33

Customized size can be fabricated according to customer's drawings and samples, pls inquire with us if you are in need


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