Dual PEM

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Dual PEM systems provide the capability to make real time polarization analysis measurements. When only one PEM is used, two measurements must be made with the sample rotated 45° after the first measurement. However, measurements can be made in real time using two PEMs mounted at 45° with respect to each other.

Hinds Instruments has four standard dual PEM choices. These are designed for applications that require different useful apertures and/or measurements in different spectral regions. The standard dual PEM models are:

The I/FS50-60 system (as well as the I/FS50-55 and I/FS47-50) uses the Series I PEM. The Series l PEM has a rectangular shaped optic that, in essence, limits the useful aperture of the PEM. These small systems are practical when the light source has a small beam diameter. Therefore, if the application for the dual PEM involves a light source consisting of only one laser, this is a viable option.

The II/FS20-23 and the II/FS42-47 systems also employ high quality fused silica as the optical material and have a transmission range of 170nm to 2.6µm. Both models are completely functional in the visible and near IR light spectral regions. However, the II/FS20-23 system has the benefit of a larger aperture. This is particularly useful if the light source has a large beam diameter or if more than one light source is to be accommodated. This dual PEM is typically used in a Stokes polarimeter system to measure the orientation of the linear component of light emitted from a beam of deuterium atoms injected into tokamak plasma. The II/42-47 is also used in Stokes polarimetry measurements and provides a more compact optical head configuration.

The II/ZS37-50 employs ZnSe as the optical material. This provides a quarter-wave modulation range of 2 μm to 18µm. This PEM pair has applications in the infrared region of the light spectrum. It can be used to analyze either a broadband light source or an infrared laser such as a CO₂ laser.

Most dual PEM systems utilize Series II PEMs, which employ octagonal shaped optical elements. The Series II PEMs meet higher requirements for polarization modulation and offer symmetrical distribution of PEM retardation over a larger aperture range.

Like all Hinds PEMs, these systems provide the unique benefit of a wide acceptance angle (> ± 20 degrees), good transmission over a wide wavelength range, high power handling capabilities, and a high polarization sensitivity. The table above compares the technical specifications for all of the standard Hinds dual PEM systems. Customized dual PEMs are available.

Component Details

Custom configurations and accessories are available for this product family. Please contact a representative for more details.

Specifications

Model	Optical Material	Retardation Range - Quarter Wave	Retardation Range - Half Wave	Useful Aperture
I/FS50-60	Fused Silica	170 nm – 2 μm	170 nm – 1 μm	16 mm
II/FS20-23	Fused Silica	400 nm – 2 μm	400 nm – 1 μm	56 mm
II/FS42-47	Fused Silica	400 nm – 2 μm	400 nm – 2 μm	27 mm
II/ZS37-50	Zinc Selenide	2 μm – 18 μm	1 μm – 10 μm	14 mm

Options

Antireflective Coating (ARC), Custom
Universal PEM Mount (UPM)
Special Calibration Option (SCO)
Special Frequency Option (SFO)

Resources

Application Notes

Dual PEM Systems: Polarimetry Applications

Worldwide Offices

Africa

Hinds Instruments, Inc.
7245 NE Evergreen Pkwy
Hillsboro, OR 97124
USA

Phone: 1.503.690.2000

Fax: 1.503.690.3000

Email: sales@hindsinstruments.com

Americas

Hinds Instruments, Inc.
7245 NE Evergreen Pkwy
Hillsboro, OR 97124
USA

Phone: 1.503.690.2000

Fax: 1.503.690.3000

Email: sales@hindsinstruments.com

Asia

India

Laser Science Services (I) Pvt. Ltd.
Offices in Navi Mumbai, Chennai, Delhi, Kolkata

Head Office:
A-454, TTC Industrial Area
MIDC, Mahape
Navi Mumbai, 400 710
INDIA

Phone: 91-22-41553232

Fax: 91-22-27781672

Email: sales@laserscience.in

Website: http://laserscience.co.in/

Japan

Tokyo Instruments Inc.
Attn: Mr. Toshihiko Masuda
T.I.Building,
6-18-14 Nishikasai Edogawa-Ku,
Tokyo 134-0088
JAPAN

Phone: +81 3 (3686) 4711

Fax: +81 3 (3686) 0831

Email: sales@tokyoinst.co.jp

Website: https://www.tokyoinst.co.jp

PR China (Integrated Components)

Aunion Tech Co Ltd – China HQ
Attn: Jinlong Wu
3rd Floor, Building 6,
2007 Hongmei Road,
Xuhui District, Shanghai, 200233 P.R. China
Phone: +86-21-51083793
Fax: +86-21-34241962
URL: www.auniontech.com

Aunion Tech Co Ltd – Shenzhen Branch
Attn: Mary Ma
Phone: 182-2167-2726
Email: lili-ma@auniontech.com
URL: www.auniontech.com

Aunion Tech Co Ltd – Beijing Branch
Attn: Allen Tian
Phone: 185-0166-2513
Email: jinquan-tian@auniontech.com
URL: www.auniontech.com

Aunion Tech Co Ltd – Wuhan Branch
Attn: William Zhao
Phone: 130-5208-0953
Email: Weiliang-Zhao@auniontech.com
URL: www.auniontech.com

Aunion Tech Co Ltd – Xi’an Branch
Attn: Jian Wang
Phone: 180-864-6606
Email: jian-wang @auniontech.com
URL: www.auniontech.com

Aunion Tech Co Ltd – Chengdu Branch
Attn: Yi Liu
Phone: 185-1625-1865
Email: yi-liu@auniontech.com
URL: www.auniontech.com

OPCrown Photonics Co Ltd – Beijing HQ
12B18, Changyin Bdg, No. 88 Yongding Rd
Haidian District, Beijing, P.R. China, 100039
Phone: 010-68214292
Fax: 010-68214191
Email: sales@opcrown.com
Attn: Rose Zhong
Phone 131 6171 4851
EMail: rose.zhong@opcrown.com
URL: www.opcrown.com

OPCrown Photonics Co Ltd – Wuhan Branch
Attn: Paul Liu
Phone: 137 9705 5601
Email: paul.liu@opcrown.com

OPCrown Photonics Co Ltd – Su Zhou Office
Attn: Sharon Ji
Phone: 188 6212 1645
Email: sharon.ji@opcrown.com

OPCrown Photonics Co Ltd – Chengdu Office
Attn: Bryan Zhang
Phone: 185 8378 9679
Email: bryan.zhang@opcrown.com

OPCrown Photonics Co Ltd – Shenzhen Branch
Attn: Nick Yuan
Phone: 136 3160 6196
Email: nick.yuan@opcrown.com

PR China (Research Components)

Aunion Tech Co Ltd – China HQ
Attn: Jinlong Wu
3rd Floor, Building 6,
2007 Hongmei Road,
Xuhui District, Shanghai, 200233 P.R. China

Phone: +86-21-51083793

Fax: +86-21-34241962

Website: https://www.auniontech.com/

South Korea

Opto Mechanical Associates (OMA) Co.
405-11,
Goong-dong,
Yusung-gu Daejeon 305 335
KOREA

Phone: +82 42 822 9501-3

Fax: +82 42 822 9504

Email: mail@omacom.co.kr

Website: https://www.omacom.co.kr

Taiwan (Integrated Components)

Aunion Tech Co Ltd
Attn: Jinlong Wu
Rm. 905, F Building,
Everbright Convention and Exhibition Center,
No. 86 Caobao Road, Shanghai 200235 P.R. China
Phone: +86-21-51083793
Fax: +86-21-34241962
Email: jinlong-wu@auniontech.com
URL: www.auniontech.com

OPCrown Photonics Co Ltd
Room 318, East 11th Bldg, No. 83 Fuxing Rd
Haidian District, Beijing, P.R. China, 100039
Phone: 010-68214292
Fax: 010-68214191
Email: sales@opcrown.com
URL: www.opcrown.com

Taiwan (Research Components)

Aunion Tech Co Ltd
Attn: Jinlong Wu
Rm. 905, F Building,
Everbright Convention and Exhibition Center,
No. 86 Caobao Road, Shanghai 200235 P.R. China

Phone: +86-21-51083793

Fax: +86-21-34241962

Email: jinlong-wu@auniontech.com

Website: https://www.auniontech.com/

Australia

GMP SA
Avenue des Baumettes 17
CH – 1020 Renes

Phone: +41 21 633 21 21

Fax: +41 21 633 21 29

Email: info@gmp.ch

Website: https://www.gmp.ch

The Netherlands

Alphen aan den Rijn

Acal BFi Netherlands BV
J.P. Thijsseweg 1e
2408 ER Alphen aan den Rijn
THE NETHERLANDS
Phone: +31 (0) 1 7244 6060
Fax: +31 (0) 1 7244 3414
Email: sales-nl@acalbfi.nl
URL: www.acalbfi.com/nl

Eindhoven

Acal BFi Netherlands BV
Luchthavenweg 53
5657 EA Eindhoven
THE NETHERLANDS
Phone: +31 (0) 4 0250 7400
Fax: +31 (0) 4 0250 7409
Email: sales-nl@acalbfi.nl
URL: www.acalbfi.com/nl

Ukraine (Research Components)

SPECTROPOL
ul. Trakt Lubelski 271 G
04-667 Warszawa
POLAND

Phone: +48 22 617 67 17

Fax: +48 22 617 67 97

Email: biuro@spectropol.pl

Website: https://www.spectropol.pl

United Kingdom

Milton Keynes

Wokingham

Middle East

Hinds Instruments, Inc.
7245 NE Evergreen Pkwy
Hillsboro, OR 97124
USA

Phone: 1.503.690.2000

Fax: 1.503.690.3000

Email: sales@hindsinstruments.com

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Dual PEM

Component Details

Africa

Americas

India

Japan

PR China (Integrated Components)

PR China (Research Components)

South Korea

Taiwan (Integrated Components)

Taiwan (Research Components)

Australia

Austria

Belarus (Research Components)

Czech Republic (Research Components)

Denmark

Estonia (Research Components)

Finland

France

Germany

Ireland

Italy

Latvia (Research Components)

Lithuania (Research Components)

Norway

Poland (Research Components)

Slovakia (Research Components)

Sweden

Switzerland

The Netherlands

Alphen aan den Rijn

Eindhoven

Ukraine (Research Components)

United Kingdom

Milton Keynes

Wokingham

Middle East

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