Cat. No. SSCS1007E06

AUG/2002 HPK

Created in Japan (PDF)

SPECIFICATIONS

50 ps

Internal battery (W-10)

70% max. (with no condensation)

DIMENSIONAL OUTLINES (Unit: mm)

MEASUREMENT EXAMPLES

C4258

BAT TERY

Battery box

Output connector (SMA type)

43

47

16

20

21

10

16

20

15

M6 P1.0 D=6

(For exclusive stand)

4-M3 P0.5 D=6

1/4-20UNG D=6

1/4-20UNG D=6

M6 P1.0 D=6

(For exclusive stand)

4-M3 P0.5 D=6

Window

13

Weight: Approx. 300 g

• Example showing measurement of relaxation oscillations from a

semiconductor laser in the 0.8

µm band

Type mumber

Spectral response

Sensitivity

Active area

Rise time

Maximun input plue width

Low-frequency cutoff

Power source

Operating ambient temperature

Storage ambient temperature

Operating/storage ambient humidity

The C4258 series of picosecond photodetectors consists of pho-

todetectors featuring a light detector, a high-frequency circuit,and

a battery integrated in a single unit, as well as fast response. Opti-

cal phenomena in the picosecond region can be measured sim-

plyby irradiating the unit with an optical beam and connecting the

output to an external oscilloscope.

A high-speed MSM photodiode is used as the detector, enabling

a fast rise time , a large active area. For this reason, the C4258 is

ideal for pulse waveform observation of picosecond lasers such

as Ti: sapphire / YAG lasers, and semiconductor lasers for

DVDs and optical communications. In addition, by combining it

with a short-pulselight source, the C4258 can be used in applica-

tions such as measuring the transmission characteristics of opt-

ical fibers.

Four models are available. This lets the user select which ever

model is optimum for the wavelength of the pulse being meas-

ured.

C4258

C4258-01

C4258-02

C4258-03

0 to +40

°C

– 10 to +50

°C

100 kHz

0.4

µm to 0.87 µm

0.6

µm to 1.65 µm

0.32

µm to 1.0 µm0.98 µm to 1.65 µm

1 mV/mW (at 0.6

µm)

3 mV/mW (at 1.55

µm)

5 mV/mW (at 0.85

µm)

10 mV/mW (at 1.55

µm)

0.2 mm

× 0.2 mm

0.2 mm

× 0.2 mm

φ 0.4 mm

φ 0.08 mm

50 ps

--

< 5 ns

< 5 ns

< 400 ps

< 400 ps

Homepage Address http://www.hamamatsu.com

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Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.

.

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

Specifications and external appearance are subject to change without notice..

© 2002 Hamamatsu Photonics K.K.

ISO 9001

Certificate: 09 105 79045

HAMAMATSU PHOTONICS K.K., Systems Division

812 Joko-cho, Hamamatsu City, 431-3196, Japan, Telephone: (81)53-431-0124, Fax: (81)53-435-1574, E-mail:export@sys.hpk.co.jp

U.S.A. and Canada: Hamamatsu Photonic Systems: 360 Foothill Road, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1)908-231-1116, Fax: (1)908-231-0852, E-mail: usa@hamamatsu.com

Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658, E-mail: info@hamamatsu.de

,

France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10, E-mail: infos@hamamatsu.fr

United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10Tewin Road, Welwyn Garden City, Hertfordshire, AL7 1BW, U.K., Telephone: (44) 1707-294888, Fax: (44) 1707-325777, E-mail: info@hamamatsu.co.uk

North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 Solna, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01, E-mail: info@hamamatsu.se

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Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Mois, 1/E 20020 Arese (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741, E-mail: info@hamamatsu.it