ShaH WAVEFRONT SENSORS

 

   
 
 

 

The ShaH family of industrial Shack-Hartman wavefront sensors is intended for a wide range of applications including fast and precise quality control of optical elements, airflow analysis, measurement of laser beam parameters, etc. The flexible design of the ShaH system allows optimizing the sensor parameters for a particular application. An advantageous feature of the device is the use of high-quality telescopes. This allows minimizing the influence of the angle of incidence of the analyzed beam on the instrumental function of the sensor. A special high-precision algorithm for locating hartmann image spots centers provides high accuracy of measurements even in difficult viewing conditions. The SDK (C++) allows to operate all functions of the sensor and to achieve easy integration with user software.

         
     

STANDARD SENSORS

 
         
     

Aperture
diameter

Spatial
resolution

Minimum/maximum
measured curvature

Processing
frequency

Maximal
exposure

Dimensions

mm

μm

m/km

Hz

nJ/cm2

mm

ShaH-0620(A):   photo   PDF

6

150

0.12/5.8

60

13

80×60×40

ShaH-0620(B):   photo   PDF

6

500

0.06/3

60

0.3

80×60×40

ShaH-1127:   photo   PDF

11

150

0.22/12

27

0.6

50×50×65

ShaH-1515:   photo   PDF

15

150

0.3/30

15

1.3

51×51×85

ShaH-3020:   photo   PDF

30

750

3/150

60

0.5

342×128×93

ShaH-6060:   photo   PDF

60

1500

12/580

60

0.13

300×160×100

ShaH-10020:   photo   PDF

100

2500

35/1600

60

0.05

400×170×255

 
         
     

The parameters may be changed if requested by the customer

 
     

 

 
       
       

SPECIALIZED SENSORS

 
 

       
     

Special technical and scientific tasks may require the use of wavefront sensors with advanced features. Our company has developed a series of specialized wavefront sensors: for use in low light conditions; for use with UV or IR; for high frequency measurements.

 
         
     

Aperture
diameter

Spatial
resolution

Minimum/maximum
measured curvature

Processing
frequency

Maximal
exposure

Dimensions

mm

μm

m/km

Hz

nJ/cm2

mm

ShaH-021300:   photo   PDF   high-speed

2.5

250

0.02/0.28

1300

0.08

75×75×52

ShaH-03500:   photo   PDF   high-speed, for use in low light conditions

3

150

0.06/1.1

515

0.4

250×140×175

ShaH-04130:   photo   PDF   high-speed, for use in low light conditions

4.5

300

0.06/1.2

130

0.03

50×50×80

ShaH-1035:   photo   PDF   for use in low light conditions

10

300

0.13/6

35

0.03

80×60×40

ShaH-1220:   photo   PDF   for use in low light conditions

12

480

0.3/17

20

0.02

232×83×93

ShaH-1001000:   photo   PDF   for use in low light conditions

100

5000

32/370

1000

0.002

305×230×625

ShaH-6060-UV:   photo   PDF   for use in 200-450 nm

60

3000

10/450

60

0.05

400×160×100

ShaH-10025-IR:   photo   PDF   for use in 3-10 μm

100

8300

42/300

25

0.04

600×230×625

 
         
       
       

ACCESSORIES

 
           
 

   

The set of accessories allows customers to compose various schemes for optical inspection.

BS-6-32 - beamsplitter and collimation module is utilized for collimating irradiation of single mode diode laser and splitting it for illumination of the element under test. The module provides also an imaging of input pupil of the WFS onto the element under test.

NAC-6 – the family of numerical aperture correctors are required for inspection of spherical and aspherical surfaces and components. Please, refer the schematic drawings for specification.

Technical specification: PDF

 
           
       

SOFTWARE

 
           
 

   

ShaH program package is intended for measuring a wavefront by means of ShaH wavefront sensors. Measurement data are both represented in a realtime and stored for further post-processing and analysis.

Output:

• Raw Hartmann images
• Spot shift map
• Wavefront aberration map (3D plot, 2D projection,
synthesized interferogram, up to 66 Zernike polynomials)
• Measurement error map
• PSF (point spread function)
• MTF (modulation transfer function)
• Strehl ratio, M2 factor, Gauss-Hermite modes
• Turbulence parameter estimation (for free space measurements)

Statistical analysis can be carried out during post-processing. If the system is equipped with a wavefront corrector, the ShaH software allows calculating control signals for the corrector in the closed-loop mode.

The program package Shah is distributed as a self-installing executable file and/or a C++ SDK, which grants access to all functionality of the sensor and allows complete customization useful to the user’s software.

 
     

The optional program module “M2-sensor” is intended both for measurements of intensity and phase profiles and for estimation of the M2 factor of a single-mode laser beam on the basis of the wavefront measurement data. M2 calculations are carried on according to ISO 11146-2 standard. The module also permits expansion of the multimode beam into Gauss-Hermite modes in both automatic and manual regimes.

The optional program module “Beam propagation” is intended for simulation of the beam propagation starting from the wavefront sensor input plane to the plane located at a doubled distance to the plane of the beam waist.

 
           
       

ALL PRODUCTS

ShaH WaveFront Sensors

MultiSpot Aberroscopes

MaVis Digital Video Cameras

U-Flex Deformable Mirrors

LS-FC-1 Laser Sources

ShaH-IOL Intraocular lens Tester

PAD-300 Piezo Actuator Control Unit