Anamorphic Prism Pairs
APP / APP J
• Beam shaping for diode lasers
• For increased fiber coupling efficiency
• Ratio between 1:2 and 1:5 (APP J: user adjustable)
• Aperture 8mm, no angle shift of output beam
• Patented Design
Diode lasers usually feature an elliptical beam profile. Often, however, a circular beam shape is required, e.g. for mode-matching to an external resonator, adapting beam size to pass a small aperture of an isolator, or to obtain a supreme fiber coupling efficiency. The APP J is an adjustable anamorphic prism pair which circularizes an elliptical beam, by either expanding or compressing one of the beam axes.
Specifications
Article number Wavelength [nm] Compression / magnification Transmission (typ.)* APP J 390-420
390 – 420
2:1 – 5:1
95 %
APP J 600-1100
600 – 1100
2:1 – 5:1
95 %
APP J 1100-1500
1100 – 1500
2:1 – 5:1
95 %
* Please note that the APP J is designed for p-polarized light (polarization parallel to the plane of incidence), ensuring maximum transmission due to (near-) Brewster conditions on one side and a high-quality AR-coating on the other side of each prism. The housing can easily be fixed on any standard mirror mount or post (see technical drawing).
Additional Information
Beam shaping with an anamorphic prism pair. One
axis of an elliptical beam is magnified or compressed,
the other axis remains unchanged.
Variable expansion and compression ratio.