The diamond turned techspec canopus reflective beam expanders are ideal for broadband or achromatic beam expansion and a wide range of light sources.
Reflective beam expander.
The fixed magnification sliding lens beam expanders are offered with optics that have either narrowband or wideband ar coatings.
Both the object and the image are located at infinity which means that the input and output beams are collimated afocal system we shall assess how well that can be achieved with two spherical mirrors figure 1 shows the cassegrain configuration.
Reflective beam expanders are much less common than transmissive beam expanders but have several advantages that make them the right choice for certain applications.
To secure the reflective beam expanders to an optical table use two cl2 cl3 or cl6 table clamps to hold the lip of the housing against the table s surface.
Reflective beam expanders are modified cassegrain and gregorian mirror systems.
The fact that a negative lens has over corrected spherical aberration as mentioned above permits us to bend the negative entrance element of a galilean beam expander in such a way that it will compensate.
Available in standard 2 5x 5x 10x fixed magnification or customer specified fixed or variable magnification configurations osl smaller diameter reflective beam expanders are designed to be easy to use and to.
Canopus reflective beam expanders.
Thus reflective beam expanders can be used with collimated polychromatic light without the need of any fine focus adjustment.
We also offer variable magnification beam expanders and reflective beam expanders.
The techspec canopus reflective beam expanders feature an all reflective monolithic design ideal for broadband or achromatic beam expansion and a wide variety of sources from the ultraviolet to the infrared including tunable ultraviolet and ultrafast lasers.
Canopus reflective beam expanders.
The be04r and be06r beam expanders also feature through holes that accept 1 4 20 and m6 cap screws which can be used to mount the beam expander to the table or elevate the beam expander.
The all reflective design enables these beam expanders to be used with a variety of lasers including tunable ultraviolet and ultrafast sources while the innovative design ensures high precision with minimal wavefront distortion.
Reflective beam expanders do not suffer from chromatic aberration whereas the magnification and output beam collimation of transmissive beam expanders is wavelength dependent.
For a germanium beam expander with n 4 f 2 m 5 the convergence angles are γ gal 1 7 mrad and γ kep 2 6 mrad.
