Diffusers (Beam homogenizers)
Basically we have 4 different methods to homogenize a laser beam, i.e.
(1) flat-top beam shaping for a Gaussian beam with a specific beam size and good beam quality
(2) low speckle or speckle-free beam homogenizing tolerant to incident beam size and beam quality
(3) beam homogenizing with speckles, tolerant to incident beam size and beam quality
(4) beam homogenizing for incoherent beams with microlenses
The products that you are reading were designed and fabricated based on our third method of homogenizing an incident laser beam. One main advantage of this type of product is its insensitivity to the incident beam quality and the change of intensity. Hence it is most suitable for the less stable lasers, laser with long pulse duration or multi-pulse laser applications. Due to the lengthy exposure time, the intensity fluctuation can be averaged to some extent. For a circularly symmetric output beam, the variation in intensity can be further impressed by rotating the beam homogenizer.
|
Item No |
DOE receiving size |
Wavelength |
Diffraction angle |
Delivery time |
|
DF-RD-6-2-473 |
6 x 6 mm |
473 nm |
2 deg |
|
|
DF-RD-6-3-589 |
6 x 6 mm |
589 nm |
3 deg |
|
|
DF-RD-6-4-785 |
6 x 6 mm |
785 nm |
4 deg |
|
|
DF-RD-6-4-808 |
6 x 6 mm |
808 nm |
4 deg |
|
