Optical Surfaces' laser beam expanders incorporate off-axis mirrors which provide an unobstructed output and highly efficient transmission.
The reflective design of these beam expanders is achromatic and with aluminium coatings can operate from UV to far IR without adjustment. Optical Surfaces beam expanders are portable and can be used without the need for internal re-alignment.
Each off-axis beam expander is housed in an aluminium housing with provision for fixing to an optical table. Alignment aids are provided to ensure correct beam pointing. Standard beam expanders have fixed magnification. Variable magnification beam expanders can be supplied with interchangeable primary mirrors. An interferogram and OPD map is supplied with every beam expander manufactured by Optical Surfaces.
Applications
Doppler – shift LIDAR
LIDAR systems requiring fixed or variable focusing mechanism
Remote sensing
Interferometers
High power lasers
Laser Beam Expanders Specifications
Standard apertures up to 300 mm
Wavefront accuracy > λ/5 p-v at 633nm
Expansion up to x100
Vertical or horizontal beam separation
Range of coatings
Focusing capability (option)
Common focus design (option)
Variable magnification (option)
Temperature stabilisation using Invar tie bars (option)
Vacuum compatibility (option)
Cleanroom assembly (option)