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UPD-200 Dataheets PDF



Part Number UPD-200
Manufacturers ALPHALAS
Logo ALPHALAS
Description ULTRAFAST PHOTODETECTOR
Datasheet UPD-200 DatasheetUPD-200 Datasheet (PDF)

ALPHALAS GmbH ULTRAFAST PHOTODETECTORS UPD FEATURES: - ultra high-speed operation - risetime below 40 picoseconds - wide spectral ranges - built-in biasing - long-life battery - coaxial photodiode coupling - compact design - high sensitivity APPLICATIONS: - pulse form measurements - pulse duration measurements - precise synchronization AN EXAMPLE OF A 10-PS LASER PULSE MEASURED BY UPD-200-SD PHOTODIODE AND 1 GHz OSCILLOSCOPE. THE MEASURED PULSE DURATION IS LIMITED BY THE OSCILLOSCOPE BANDWIDT.

  UPD-200   UPD-200


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ALPHALAS GmbH ULTRAFAST PHOTODETECTORS UPD FEATURES: - ultra high-speed operation - risetime below 40 picoseconds - wide spectral ranges - built-in biasing - long-life battery - coaxial photodiode coupling - compact design - high sensitivity APPLICATIONS: - pulse form measurements - pulse duration measurements - precise synchronization AN EXAMPLE OF A 10-PS LASER PULSE MEASURED BY UPD-200-SD PHOTODIODE AND 1 GHz OSCILLOSCOPE. THE MEASURED PULSE DURATION IS LIMITED BY THE OSCILLOSCOPE BANDWIDTH. AVAILABLE TYPES: PHOTODETECTOR RISE TIME QUANTUM EFFICIENCY SENSITIVE AREA 45 % 0.1 mm2 UPD-200 <200 ps 300 ps 80 % 0.25 mm2 UPD-300 500 ps 80 % 1.0 mm2 UPD-500 300 ps 75 % 0.008 mm2 UPD-300 IR1 UPD-70 IR2* 70 ps 90 % 0.005 mm2 UPD-40 IR2* <40 ps 90 % 0.003 mm2 ----------------------------------------------------------------------------------------------------Spectral ranges: 320-1100 nm (index S, Silicon), 190-1100 nm (index U, UV-enhanced Silicon) 700-1800 (index IR1, Germanium), 800-1700 (index IR2, InGaAs) Window type: Dimensions: polished (index P) or diffuse (index D) Housing: 20x20x60 mm + BNC-connector/*SMA-connector --- ORDERING INFORMATION AND A PRACTICAL HINT ON THE NEXT PAGE --ALPHALAS GmbH Hannah-Vogt-Str. 1, D-37085 Göttingen, Germany Tel.: +49-551-7706147, Fax: +49-551-7706146, E-mail: [email protected], Web-Site: www.alphalas.com Free Datasheet http://www.datasheet4u.com/ ALPHALAS The GmbH ultrafast PIN photodiodes have certain advantages over vacuum photodiodes. Besides the compact size and low-voltage power supply, they feature higher sensitivity, which is typically two orders of magnitude larger in the near infrared as compared to vacuum photodiodes. Our UV-extended version is the only commercial photodiode that covers the spectral range from 190 nm to 1100 nm and has risetime below 200 ps. Because of the extremely low dark current, the built-in high-power battery provides trouble-free operation for UP TO FIVE YEARS*! In combination with our ultrafast low-noise amplifiers (1 GHz bandwidth) the UPD-type photodetectors are an inexpensive alternative to the avalanche devices. * UPD-300-IR, UPD-500 and monitoring of lasers with repetition rate >100 Hz require external power supply! ORDERING INFORMATION: UPD - XXX - X X - X Ultrafast photo detector Rise time (picoseconds) Window type: H=High rep. rate >100 Hz L=Low rep. rate <100 Hz P=Polished D=Diffusor S=visible Spectral range: U=Uv IR=Infrared EXAMPLE: UPD-200-UD-L ultrafast photodetector with 200 ps rise time, spectral range extended to UV, with diffusor, for low rep. rate laser pulses < 100 Hz A PRACTICAL HINT! In order to evaluate the performance of a high-speed photodetector, you do not need a short pulse laser source at all. Just take a small He-Ne laser and focus the light on the sensitive area of the PIN photodiode. You will observe a signal modulated with very high frequency due to the longitudinal mode beating. In the figure on the right, the beating frequency f=c/2L (c -speed of light, L - laser cavity length) is 1.5 Gigahertz! Since this frequency is well above the specified 1 GHz oscilloscope bandwidth, the modulation depth in the figure is 25% only. LONGITUDINAL MODE BEATING OF A He-Ne LASER AS DETECTED BY UPD-200-SP PHOTODIODE ALPHALAS GmbH Hannah-Vogt-Str. 1, D-37085 Göttingen, Germany Tel.: +49-551-7706147, Fax: +49-551-7706146, E-mail: [email protected], Web-Site: www.alphalas.com Free Datasheet http://www.datasheet4u.com/ .


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