HAMAMATSU B749 Datasheet

INFRARED DETECTOR

Photon drag detector

B749

High-speed detector with high sensitivity in the 10 µm band (for CO

B749 is a photon drag detector that utilizes the photon drag effect in which carriers created by input photons are dragged in the direction of
photons, generating an electromotive force. B749 ensures high-speed operation even at room temperatures and has high sensitivity in the 10 µm
band, making it well suited to detection of CO

Features

l

Room temperature operation with high-speed response

l

Easy-to-use detector module with amplifier (B7506-01)
is available

General ratings

■

Parameter Specification Unit

Active area
Output polarity Positive -

Absolute maximum ratings

■

Parameter Symbol Value Unit

Operating temperature Topr 0 to +60
Storage temperature Tstg 0 to +60

2

lasers. An easy-to-use detector module integrated with a preamplifier (B7506-01) is also available.

2

laser detection)

Applications

l

CO2 laser detection

ACCESSORIES (Optional)

l

Magnet stand A1447

l

Infrared detector module with preamp B7506-01

f5

mm

°C
°C

Electrical and optical characteristics (T=25 °C)

■

Parameter Symbol Condition Min. Typ. Max. Unit

Photo sensitivity S
Rise time tr 10 to 90 % - - 1 ns
Noise equivalent power NEP
Output impedance - - 50 ­Maximum input light level - - 1 - J/cm

l=10.6 µm

l=10.6 µm

-1.2-mV/kW

-4 × 10-3-W/Hz

W

1/2

2

■ Dimensional outline (unit: mm)

B749

Photon drag detector

B749

16.0 ± 0.5

30

ACTIVE AREA

79.5

20

1/4-20UNC

Magnet stand A1447 (sold separately)

1/4-20UNC

5.5

20

BNC
CONNECTOR

KIRDA0016EC

100

160 MIN. 230 MAX.

49.5

KIRDA0017EA

■ Precautions for use

The Ge element mounted in the detector package is susceptible to shocks and drop impacts. Handle the detector with

extreme care.

Do not allow light higher than 10 MW/cm2 to strike the detector element, because the element surface might be damaged.

Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.

HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: [phone], Fax: [phone], http://www.hamamatsu.com

U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: [phone], Fax: [phone]
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: [phone], Fax: [phone]
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: [phone], Fax: [phone]
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: [phone], Fax: [phone]
North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: [phone], Fax: [phone]
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: [phone], Fax: [phone]

Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2002 Hamamatsu Photonics K.K.

Cat. No. KIRD1038E02
Sep. 2002 DN