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Streak Camera C2830
Streak cameras are high-speed light detectors which enable direct measurement of light phenomena with unsurpassed temporal resolution. They can simultaneously measure time, position (or wavelength) and light intensity, and process the data in real-time using a dedicated read-out system. The Streak Camera C2830 can be equipped with either of two plug-ins: a fast-speed (for better than 10 ps resolution) or a slow-speed (for better than 100 ps resolution) sweep unit. In addition, C2830 has a 100 ns high-speed electronic shutter which eliminates unnecessary incident light during the nonsweep period and makes it possible to do sampling measurements on continuous phenomena.
FEATURES q Designed for single sweep operations q Covers a wide time range from 500 ps to 1 ms (using both fast and slow sweep plug-in units) q Temporal resolution Fast sweep unit: Better than 10 ps Slow sweep unit: Better than 100 ps q Simultaneous measuring time, position (or wavelength) and light intensity q High sensitivity (single photoelectron detectability) q High-speed gate function
Plug-in Sweep Units Available: Fast Sweep Unit Slow Sweep Unit
SYSTEM CONFIGURATION
Video output (Video CCD Camera)*
C2830 Main body Readout system (HPD-TA)
Cooled Digital Camera C4742-95 Camera head Control unit Lens output Personal computer (IBM PC/AT Compatible)
Output format
Sweep units
Frame Grabber
Streak Image Analysis Software
Streak Image Analysis Systems for IBM(R) PC/AT
5 Built in main body.
OPERATING PRINCIPLE
The streak camera converts incident light into electrons and performs a high-speed sweep (deflecting electrons from top to bottom), enabling detection of the time variation of the incident light intensity by converting these into different positions on the screen. The figure below shows the operating principle of the streak tube, which forms the heart of the streak camera. The light pulse to be measured is focused onto the photocathode of the streak tube through the slit, where the photons are converted into a number of electrons proportional to the intensity of the incident light. These electrons are accelerated and conducted towards the phosphor screen, and a high-speed voltage which is synchronized to the incident light is applied. The electrons are swept at high speed from top to bottom and are then multipled in the MCP (micro-channel plate), after which they are bombarded against the phosphor screen of the streak tube and converted to an optical image. The optical image which appears on the phosphor screen is called a streak image, and shows the intensity distribution of the incident light, by which the positions of the electrons can be determined in the perpendicular direction over the passage of time. Using this method, the temporal intensity distribution of the light being measured can be displayed as the spatial intensity distribution on the phosphor screen.
APPLICATIONS
q q q q
Research involving free electron lasers and various other types of pulsed lasers Plasma light emission, radiation, laser ablation, combustion and explosions Fluorescence lifetime measurement, transient absorption measurement, time-resolved Raman spectroscopy Lidar, Thomson scattering, laser distance measurement
Trigger signal
Sweep circuit
Sweep electrode (where electrons are swept in the direction from top to bottom)
Streak image on phosphor screen
Optical intensity
Lens
Time Incident light
Space Slit Photocathode (photons electrons) Accelerating electrode (where electrons are accelerated) Phosphor screen (electrons light)
Time Space
MCP (which multiplies electrons)
The intensity of the incident light can be read from the brightness of the phosphor screen, and the time and space from the position of the phosphor screen.
[Operating Principle of the Streak Tube]
(temporal resolution: better than 10 ps) (temporal resolution: better than 100 ps)
SPECIFICATIONS
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1 C2830 Main Body Input Optics
0 to 8.0 mm 0 to 5 mm (5 m accuracy) 1:1 200 nm to 850 nm F/5
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2 Sweep Units Fast Sweep Unit M2547
better than 10 ps 0.5, 1, 2, 5, 10 ns/15 mm less than 20 ps about 20 ns at the fastest range only +5 to +40 Vp-p/50 +3 Vp-p/50 reset at 0 V +2 to +10 Vp-p/50 1 KHz max. >100 at the fastest range
Slit length: Slit width: Image magnification: Spectral transmission: Effective aperture ratio:
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Streak Tube N2803
UV glass Multi-alkali (S-20) 200 nm to 850 nm 8.0 mm x 1.5 mm 1 : 1.5 more than 3 x 103 P-43 12 mm (space) x 15 mm (streak length) dia.
Window material: Photocathode: Spectral response: Useful photocathode: Image magnification: Light gain: Phosphor screen: Useful screen area:
Temporal resolution: Sweep time/full screen: Trigger jitter: Trigger delay: Streak trigger signal input: Monitor signal output: Reset signal input: Gate trigger signal input: Sweep repetition rate: Dynamic range:
q
Slow Sweep Unit M2548
better than 100 ps 10 ns to 1 ms/15 mm, 16 ranges less than 50 ps about 45 ns at the fastest range only +5 to +40 Vp-p/50 +3 Vp-p/50 reset at 0 V +2 to +10 Vp-p/50 10 KHz max. >200 at the fastest range
Spectral Response Characteristic of the Streak Tube
105
Radiant Sensitivity (A/W)
104
Temporal resolution: Sweep time/full screen: Trigger jitter: Trigger delay: Streak trigger signal input: Monitor signal output: Reset signal input: Gate trigger signal input: Sweep repetition rate: Dynamic range:
103
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3 Readout System* HPD-TA
102
101
200
400 600 800 Wavelength (nm)
1000
q
Gate
Gating Method MCP MCP + photocathode Gate Extinction Ratio 1 : 103 min. 1 : 106 min. Gate Time 100 ns to continuous 100 ns to continuous
The HPD-TA (Temporal Analyzer) is a high-performance digital data acquisition and control system specifically designed to read out images from the Hamamatsu streak camera's phosphor screen. It enables precise, quantitative acquisition and pre-analysis of two dimensional streak data that includes photon counting plus a full range of data correction and calibration possibilities. It possible to select the best camera for a given streak configuration and application. The camera is connected to an IBM-compatible PC/AT via a frame grabber board that can support real-time data transfer. The entire system is controlled through a powerful but user-friendly software application that runs on a Microsoft Windows platform.
(R) * A read out system based on the computer is also available. Please consult with our sales office for more details.
q
Output Formats
* Lens output for Cooled Digital Camera C4742-95 Magnification ............................................................. 1 : 0.7 Effective F number ...................................................... F/2.0 F-mount * Video output Signal format ............................................. CCIR or RS-170 Coupling method .............................................. Fiber optics Resolution ........................... 768 x 493 or 756 x 581 pixels
q q
Line Voltage: 110/117/220/240 V AC, 50/60 Hz Power Consumption: Approx. 80 VA
Streak Camera C2830
C4547-01 Streak Trigger Unit This creates gate trigger signals and streak trigger signals from an external trigger signal, and supplies them to the single sweep unit. It is equipped with a divider function, enabling external trigger signals with a higher frequency than that of the sweep repetition frequency to be used.
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C1083-01 PIN Photodiode This device converts the incident light pulse into the streak trigger signal for the single sweep unit (M2547 and M2548). A slow repetition pulse laser is used as the applicable light source.
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Spectral response Rise time Dimensions/weight Power supply
Frequency band Input level Output signal level Output frequency
10 MHz to 200 MHz 0 to 15 dBm/50 3 Vp-p/50 1 Hz to 100 kHz (variable)
400 to 1100 nm 0.8 ns Head: 100 (W) x 160 to 235 (H) x 50 (D) mm/400 g Power supply unit: 100 (W) x 83(H) x 100 (D) mm/400 g +45 V (battery)
C1097-01 Delay Unit This unit can be used to align the operation timing of the streak camera with the target phenomenon. * A GP-IB interface is available as an option. (C1097-04)
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Variable delay range Delay setting range Minimum delay time Maximum input voltage Power supply External dimensions/weight
0 to 31.96 ps 30, 60, 120, 250, 500 ps, 1, 2 4, 8, 16 ns Approx. 12 ns 30 V AC 85 to 250 V 215 (W) x 350 (D) x 102 (H) mm/3.4 kg
DIMENSIONAL OUTLINE (Unit: mm)
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Main Unit (approx. 13.5 kg)
403 (58.5) 305 98 75
q
Power Supply Unit (approx. 6 kg)
89
160
209 (DEPTH: 350 mm) The optional Output Optics A2866 is shown with dotted lines. 300
5 IBM is a registered trademark of IBM Co. is a registered trademark of Apple Computer, Inc. 5 5 Product and software package names noted in this documentation are trademarks or registered trademarks of their respective manufacturers.
* Subject to local technical requirements and regulations, availability of products included in this promotional material may vary.
Please consult with our sales office.
* 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. (c) 1999 Hamamatsu Photonics K.K.
ISO 9001/ISO 13485 EN 46001 Certificate: 09 105 79045
Homepage Address http://www.hamamatsu.com
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:france@hamamatsu.com United Kingdom: Hamamatsu Photonics UK Limited: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)208-367-3560, Fax: (44)208-367-6384, E-mai:info@hamamatsu.co.uk North Europe: Hamamatsu Photonics Norden AB: Smidesvagen 12, SE-171-41 Solna, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01, E-mail:system@hamamatsu.se Cat. No SSCS1036E03 Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E 20020 Arese (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741, E-mail:info@hamamatsu.it
AUG/99 CR Created in Japan (PDF)
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