18.09.2017

Doc.: SS-17-0437-01

Computer-Generated Hologram(CGH)

generator control manual

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CGH reconstruction

CGH creation

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Flow of CGH program

Your target image Program CGH

Reconstruction imageCGH

635nm LD

SLM-100

Collimating lens

Fourier lens

CCD camera

Measure

reconstruction image

LCOS-SLM

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Optical system (example)

X,Y=0,0X

Y

ex)

635nm LD

CGH Target image

Via CGH

creator

Reconstructed image

S-Polarization

(TE-Mode)

Collimating lens

Fourier lens

Fourier lens

focal length

SLM-100

Input polarization

shall be adjusted

to SLM X-axis.

OS

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Recommended system requirements

Microsoft Windows 7 32bit

Microsoft Windows 7 64bit

Microsoft Windows 10 64bit

Display resolution

1280 x 800 or more resolution

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1. Open “CGH_generator_Installer” in the attached CD-ROM data

2. Open the folder for your PC operating system

3. Open “CGH_generator.msi”

Program install [1]

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4. Click “Next” button

Program install [2]

5. Click “Next” button

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6. Click “Next” button 7. Click “Close” button

8. Shortcut is created on your PC’s desktop

*Please connect the SLM to PC and supply power to SLM before

launching the CGH program

Program install [3]

AC adapter

DVI/HDMI cable

※ Do not use attached AC adapter to in any other products.

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Program execution

CGH creation

Please make sure the santec SLM-100 is connected to your computer before

launching the program as shown in the figure below.

Otherwise, CGH program can not be launched.

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11Label Content

1 CGH generation program Main

2 Software version

3 Original image

4 CGH image

5 Computed reconstruction image

6 Display image on LCOS

7 CGH parameters

8 Start button of CGH calculation

9 CSV file path displayed on LCOS

10 Display button on SLM

11 Exit for CGH generation programsantec confidential 9

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8

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Main screen

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1. Prepare BMP file for CGH generation

- Effective image size is 1024×1024 pixel

- 8 bit grayscale

1024 pix.

1024 p

ix.

2. Click “open image file” button

2

CGH generation [1]

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Make sure to confirm

your original image on

the window

3. File dialog is displayed

Select original image pattern file for CGH

creation and click “Open”.

CGH generation [2]

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4. Input the 2 parameters for CGH creation

Wavelength: The wavelength of the light source that was used

upper check box is the representative value

lower check box is the arbitrary value

*range 400-1650

Calculation number : Accuracy of hologram pattern

*integer value, range 1-1000

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5. Select files type(s) for saving

CGH(.bmp): Calculated CGH pattern saving as BMP file type

CGH(.csv) : Calculated CGH pattern saving as CSV file type

Reconstruction CGH(.bmp):Hologram theoretical image after calculation

CGH generation [3]

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6. Click “Start calculation” button

7. Save file dialog will appear appeared after

calculation completed. Input file

name and click “save” button

CGH generation [4]

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8. The created CGH image and the

theoretical calculation image will appear

after saving of files are completed

CGH generation [5]

2. File dialog is displayed, then

select CSV file and click “Open”.

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1

3. Click “Display on SLM” button to

Displayed your selected CGH image

after loading

1. Click “Open CSV file” button

Image pattern display to LCOS

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Y: Vertical pixel number

0-1049

Gray scale level for each pixel : 0~1023 (10 bit)

0 to 1023 corresponds to 0 to 2p at 1500nm light.

X: Horizontal

pixel number

0-1439

CSV file format forgenerated CGH pattern

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BMP file format for CGH generation

1024 pix.

1024 p

ix.

R:0

G:0

B:0

R:50

G:50

B:50

R:100

G:100

B:100

R:150

G:150

B:150

R:200

G:200

B:200

8 bit grayscale

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Effective area of BMP image1024 pix.

10

24

pix

.1022 pix.

10

22

pix

.

Effective area

Non effective area