Soleil-Babinet Compensators

The compensators are used to measure states of polarization or to produce certain retardation values: e.g., λ/2 or λ/4 for different wavelengths. The clear aperture is 12 mm in diameter. The compensators are supplied with a cylindrical attachment 25 mm in diameter for mounting in graduated rotating mounts or other holders.

Kompensator/Photo(5k)
Kompensator/Drawing(5k)

The compensators consist of a long wedge 39 x 13 mm2 in size and a short wedge (13 x 13 mm2) with identical wedge angle. The thickness of the 13 x 13 mm2 compensating plate is matched to provide zero path difference approximately in the center of the long wedge (the zero position). The wedge in a precision slade mount is adjustable by means of a micrometer screw. The adjustment range is about 13 mm on either side of the zero position.
Based on this adjustment range a guideline for the order numbers for the different compensators is presented in the table. To provide exact measurements, the compensators must be calibrated for the respective wavelength.

Order numbers of compensatorsto top

Wavelength RKM 06 RKQ 10 RKQ 22 RKM 70
MgF2 Quarz Quarz MgF2
0.120 Ám
0.121 Ám
0.122 Ám
0.125 Ám
0.131 Ám
0.140 Ám
0.160 Ám
0.180 Ám
0.200 Ám
0.300 Ám
0.400 Ám
0.500 Ám
0.600 Ám
0.800 Ám
1.000 Ám
1.200 Ám
1.400 Ám
1.600 Ám
1.800 Ám
2.000 Ám
2.200 Ám
2.500 Ám
3.000 Ám
4.000 Ám
5.000 Ám
6.000 Ám
7.000 Ám
0.61
1.61
2.41
3.79
5.17
5.60
5.04
4.36
3.81
2.35
1.71
1.35
1.12
0.83
0.66
 
 
 
 
 
 
 
 
 
 
 
 
 
7.35
3.89
2.71
2.10
1.72
1.26
1.00
0.82
0.69
0.60
0.52
0.46
0.41
0.35
0.27
 
 
 
 
 
 
 
 
 
 
9.72
6.79
5.25
4.30
3.16
2.49
2.05
1.73
1.50
1.31
1.16
1.03
0.88
0.68
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 

12.04
10.26
9.54
7.87
7.03
6.34
5.50
4.46
3.10
2.21
1.56
1.02

The flatness of the optical faces is about λ/20 for the compensators made of quartz and λ/10 for the version in MgF2.
Directions for adjustment and operation, including the procedure for calibration, are also supplied.

Ranges of applicationto top

Spectral Range Material Ordernr. Price 1 pc. Price 2-5 pc. Price 6-10 pc.
120 nm - 1.0 Ám  
250 nm - 1.8 Ám  
500 nm - 2.5 Ám  
  2.0 Ám - 7.0 Ám   
MgF2
Quarz  
Quarz  
MgF2
RKM 07  
RKQ 10  
RKQ 22  
RKM 70  
€ 4677 
€ 3134 
€ 3643 
€ 4504 
€ 4450 
€ 2982 
€ 3466 
€ 4285 
€ 4228 
€ 2833 
€ 3293 
€ 4071 

Available on special orderto top

  • Compensators can be supplied with calibration for certain wavelengths in the visible spectral range (633 nm, 546 nm, 435 nm).
    Calibration per wavelength RKQ 001 | € 115 (1-2 pc.), € (3-5 pc.), € (6-10 pc.)
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