Variable Optical Beam Expanders

Optical systems include f theta scanning lenses for laser marking applications compact fixed ratio beam expanders and zoom beam expanders for nd yag laser fundamental and harmonic wavelengths gauss to top hat beam shaping lenses simple telescope kits motorized or manually adjusted variable attenuators for linearly polarized laser beam or pulses.

Variable optical beam expanders.

From 2 to 5 or from 5 to 10. There are variable beam expanders zoom expanders i e devices where the magnification can be adjusted in a certain range e g. Those contain at least three lenses and some fine mechanics to adjust the position of at least one of them. Variable beam expander manually adjustable or motorized for different wavelengths.

Our variable beam expanders allow separate magnification and divergence adjustment. A beam expander with adjustable magnification. All optical elements of beam expanders are made of fused silica with high lidt coatings and provide stable and reliable performance even using them with high power lasers. 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.

Once the desired beam size and divergence is reached the position can be locked with two sets of screws. Thorlabs variable magnification galilean beam expanders are available with either a 2x 5x or a 5x 10x continuously variable beam expansion ratio. In doing so they enable different components of an optical system to adapt to one another. This variability makes special optics beam expanders ideal for easier set ups on oem machines provides flexibility to equipment and are ideal for general laboratory research.

Thorlabs 0 5x to 2x galilean variable beam expanders reducers allow the user to easily adjust the beam diameter without altering the alignment of the optical setup. These variable magnification zoom beam expanders are designed for required wavelength and each type of our beam expanders has a divergence adjustability. Beam expanders increase or decrease the diameter of a laser beam. Contemporary laser beam expanders are afocal systems developed from well established optical telescope fundamentals.

The beam expander contains a fixed lens at the front followed by two movable lenses. Research grade variable beam expanders 1x 3x and 2x 8x continuous magnification non rotating lenses minimize beam wander compact galilean designs with fixed housing length techspec draconis broadband beam expanders also available. The zoom is adjusted by turning the magnification. With special optics zoom laser beam expanders variable magnification levels can easily be set ranging from 2x 8x 2x 10x 1x 4x and 1x 5x.

For the 2x 5x zoom models the expansion ratio can be adjusted from the minimum to the maximum value via one full rotation of the zoom control.