Radiation-source unit for generating a beam having two direction

Details Radiation-source unit for generating a beam having two direction Radiation-source unit for generating a beam having two direction

1994-05-24

1996-01-16

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

356351, 356358, G01B 902

Patent

active

054852722

ABSTRACT:
A radiation-source unit is described which produces a radiation beam (30) with two components (9, 10) which are polarized perpendicularly relative to one another and which have different frequencies. The unit comprises a radiation source, a beam splitter (4), an acousto-optical modulation system (13, 18) for generating the frequency difference, and a beam combiner (25). Since the beam splitter and the beam combiner are transmission elements and their connecting line extends through the center of the modulation system the unit is compact and no alignment problems occur. Moreover, the frequency difference is adjustable over a wide range.

REFERENCES:
patent: 3825348 (1974-07-01), Nomarski et al.
patent: 4295741 (1981-10-01), Palma et al.
patent: 4627731 (1986-12-01), Waters et al.
patent: 4904068 (1990-02-01), Tatsuno et al.
patent: 5002395 (1991-03-01), Shah
patent: 5100237 (1992-03-01), Wittekoek et al.
patent: 5191465 (1993-03-01), Yamashita et al.
"Displacement Measurement with a Laser Interferometer" De Lang et al, Philips Technical Review, vol. 30 (1969) pp. 160-166.
"Zweifrequenz-Laserwegmebsystem Fur Extreme Verfahgeschwindigkeiten Und Hohe Genauigkeit" Muller et al, Technisches Messen 58 (1991) pp. 253-257.

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