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Ultrafast Photodetectors: UPD Series

42 UNIQUE PHOTODIODE MODELS AVAILABLE NOW! ALPHALAS GmbH has released new models of ultrafast photodiodes that expand the product range towards faster rise time and wider wavelength ranges from ultraviolet to infrared.

New: Greatly improved HF performance of ultrafast photodetectors in the wavelength range 800 to 2600 nm (Press Release, PDF) 

pdf Ultrafast Photodetectors: UPD Series [Detailed Datasheet, PDF]

 Features of the Photodiodes
 Applications of the Photodiodes
  • Ultra High-Speed Operation
  • Rise Times: starting from 15 ps
  • Bandwidths: up to 25 GHz
  • Spectral Ranges: 170 - 2600 nm
    (UV to IR)
  • Compact Design
  • Battery or External Power Supply
  • Models for Free-Space Beam,
    or with FC/PC Receptacle
    or Pigtailed with SM Fiber
  • Pulse Form Measurements
  • Pulse Duration Measurements
  • Precise Synchronization
  • Mode Beating Monitoring
  • Heterodyne Measurements

 

From Stock: Most models of our bestselling ultrafast photodiodes are available from stock!

Competitive prices & additional discounts for universities, academic & research institutions! Contact us now!

pdf ALPHALAS UPD Photodiode BNC - 2D Drawing [PDF]
pdf ALPHALAS UPD Photodiode BNC - 3D Model [PDF]
pdf ALPHALAS UPD Photodiode SMA - 2D Drawing [PDF]
pdf ALPHALAS UPD Photodiode SMA - 3D Model [PDF]

Introducing the UPD Series of Ultrafast Photodiodes

The UPD series of ultrafast photodetectors are best suited for measurement of optical waveforms from DC to 25 GHz. Various models feature rise times as short as 15 ps and cover the spectral range from 170 to 2600 nm.

All photodiodes are enclosed in compact and solid aluminum housings and can be biased with a battery or an external power supply.

The UV-extended versions of the silicon type photodetectors are the only commercial products that cover the spectral range from 170 to 1100 nm.

Another type of unique UV-sensitive InGaAs photodetectors can be used for detecting laser pulses in the range from 350 to 1700 nm, thus having the widest spectral range and the highest speed commercially available.

Perfect impedance matching and state-of-the-art microwave technology assure pulse form measurements without any ringing or artefacts. The customer is free to use a 50 Ω terminating resistor for highest speed operation, or a high impedance load for obtaining large signals. This guarantees maximum flexibility for diverse applications.

In combination with our BBA series of wideband high-gain amplifiers, the high-speed photodetectors are an advantageous alternative to the expensive and cumbersome avalanche photodiodes.

The UPD series high-speed photodetectors are indispensable tools for laser and photonics research.

New Photodetector Models Available: Faster Rise Times & Wider Wavelength Ranges

  • UPD-15-IR2-FC: Ultrafast InGaAs PIN photodetector, rise time < 15 ps, bandwidth > 25 GHz, spectral range 800 - 1700 nm, fiber-coupled input with FC/APC connector
  • UPD-35-IR2-P, UPD-35-IR2-D: Ultrafast InGaAs PIN photodetectors, rise time < 35 ps, bandwidth > 10 GHz, spectral range  800 - 1700 nm, with polished or diffuse window
  • UPD-35-UVIR-P, UPD-35-UVIR-D: Ultrafast InGaAs PIN photodetectors, rise time < 35 ps, bandwidth > 10 GHz, spectral range 350 - 1700 nm, with polished or diffuse window
  • UPD-50-SP, UPD-50-SD, UPD-50-UD, UPD-50-UP: Ultrafast Si PIN photodetector, rise time 50 ps, fall time 50 ps, bandwidth > 7 GHz,
    spectral range 170 - 1100 nm or 320 - 1100 nm, with polished or diffuse window
  • UPD-100-IR1-P: Ultrafast Ge photodetector, rise time < 100 ps, pulsewidth (FWHM) 300 ps, spectral range 400 - 2000 nm
  • UPD-3N-IR2-P: Fast InGaAs photodetector, extended infrared range up to 2.1 µm, rise time 150 ps
  • UPD-5N-IR2-P: Fast InGaAs photodetector, extended infrared range up to 2.6 µm, rise time 200 ps

 

Ultrafast Photodiodes (UPD Series) - Available Models

Photodetector Model Rise Time
(ps)
Band-
width
(GHz)
Spectral Range
(nm)
Quantum
Efficiency
@ Peak
Sensitive
Area (Dia. µm/mm2)
Noise Equiv. Power (W/√Hz) Dark
Current (nA)
Material Optical Input / Window Type 1) RF Output Connec-
tor
UPD-15-IR2-FC < 15 > 25 800 - 1700 75% Fiber, 9 µm 1.0 × 10-15 0.1 InGaAs Fiber w. FC/APC 5) SMA
UPD-30-VSG-P < 30 > 10 320 - 900 40% 200x200/0.04 3.0 × 10-15 0.1 GaAs Polished, glass SMA
UPD-35-IR2-P < 35 > 10 800 - 1700 80% 55/0.0024 1.0 × 10-15 0.3 InGaAs Polished, glass SMA
UPD-35-IR2-D < 35 > 10 800 - 1700 80% 55/0.0024 1.0 × 10-15 0.3 InGaAs Diffuse, quartz SMA
UPD-35-IR2-FR < 35 > 10 800 - 1700 80% 55/0.0024 1.0 × 10-15 0.3 InGaAs FC/PC receptacle 5) SMA
UPD-35-IR2-FC < 35 > 10 800 - 1700 80% Fiber, 9 µm 1.0 × 10-15 0.3 InGaAs Fiber w. FC/APC 5) SMA
UPD-35-UVIR-P < 35 > 10 350 - 1700 80% 55/0.0024 1.0 × 10-15 0.3 InGaAs 4) Polished, MgF2 SMA
UPD-35-UVIR-D < 35 > 10 350 - 1700 80% 55/0.0024 1.0 × 10-15 0.3 InGaAs 4) Diffuse, quartz SMA
UPD-40-VSI-P < 40 > 8.5 500 - 1690 40% 200x200/0.04 3.0 × 10-10 5000 InGaAs Polished, glass SMA
UPD-40-IR2-P < 40 > 8.5 800 - 1700 80% 60/0.0028 1.1 × 10-15 0.5 InGaAs Polished, glass SMA
UPD-40-IR2-D < 40 > 8.5 800 - 1700 80% 60/0.0028 1.1 × 10-15 0.5 InGaAs Diffuse, quartz SMA
UPD-40-IR2-FR < 40 > 8.5 800 - 1700 80% 60/0.0028 1.1 × 10-15 0.5 InGaAs FC/PC receptacle 5) SMA
UPD-40-IR2-FC < 40 > 8.5 800 - 1700 80% Fiber, 9 µm 1.1 × 10-15 0.5 InGaAs Fiber w. FC/APC 5) SMA
UPD-40-UVIR-P < 40 > 8.5 350 - 1700 80% 60/0.0028 1.1 × 10-15 0.5 InGaAs 4) Polished, MgF2 SMA
UPD-40-UVIR-D < 40 > 8.5 350 - 1700 80% 60/0.0028 1.1 × 10-15 0.5 InGaAs 4) Diffuse, quartz SMA
UPD-50-SP < 50 > 7.0 320 - 1100 45% 100/0.0079 1.2 × 10-15 0.001 Si Polished, glass SMA
UPD-50-SD < 50 > 7.0 320 - 1100 45% 100/0.0079 1.2 × 10-15 0.001 Si Diffuse, quartz SMA
UPD-50-UP < 50 > 7.0 170 - 1100 45% 100/0.0079 1.2 × 10-15 0.001 Si 4) Polished, MgF2 SMA
UPD-50-UD < 50 > 7.0 170 - 1100 45% 100/0.0079 1.2 × 10-15 0.001 Si 4) Diffuse, quartz SMA
UPD-70-IR2-P < 70 > 5.0 800 - 1700 80% 80/0.005 2.0 × 10-15 0.8 InGaAs Polished, glass SMA
UPD-70-IR2-D < 70 > 5.0 800 - 1700 80% 80/0.005 2.0 × 10-15 0.8 InGaAs Diffuse, quartz SMA
UPD-70-IR2-FR < 70 > 5.0 800 - 1700 80% 80/0.005 2.0 × 10-15 0.8 InGaAs FC/PC receptacle 5) SMA
UPD-70-IR2-FC < 70 > 5.0 800 - 1700 80% Fiber, 9 µm 2.0 × 10-15 0.8 InGaAs Fiber w. FC/APC 5) SMA
UPD-70-UVIR-P < 70 > 5.0 350 - 1700 80% 80/0.005 2.0 × 10-15 0.8 InGaAs 4) Polished, MgF2 SMA
UPD-70-UVIR-D < 70 > 5.0 350 - 1700 80% 80/0.005 2.0 × 10-15 0.8 InGaAs 4) Diffuse, quartz SMA
UPD-100-IR1-P < 100 > 3.0 400 - 2000 80% 80/0.005 3.0 × 10-13 700 Ge Polished, glass SMA
UPD-200-SP < 175 > 2.0 320 - 1100 85% 400/0.126 1.5 × 10-15 0.001 Si Polished, glass BNC
UPD-200-SD < 175 > 2.0 320 - 1100 85% 400/0.126 1.5 × 10-15 0.001 Si Diffuse, quartz BNC
UPD-200-UP < 175 > 2.0 170 - 1100 85% 400/0.126 1.5 × 10-15 0.001 Si 4) Polished, MgF2 BNC
UPD-200-UD < 175 > 2.0 170 - 1100 85% 400/0.126 1.5 × 10-15 0.001 Si 4) Diffuse, quartz BNC
UPD-300-SP < 300 > 1.0 320 - 1100 90% 600/0.283 3.0 × 10-15 0.01 Si Polished, glass BNC
UPD-300-SD < 300 > 1.0 320 - 1100 90% 600/0.283 3.0 × 10-15 0.01 Si Diffuse, quartz BNC
UPD-300-UP < 300 > 1.0 170 - 1100 90% 600/0.283 3.0 × 10-15 0.01 Si 4) Polished, MgF2 BNC
UPD-300-UD < 300 > 1.0 170 - 1100 90% 600/0.283 3.0 × 10-15 0.01 Si 4) Diffuse, quartz BNC
UPD-500-SP < 500 > 0.6 320 - 1100 90% 800/0.5 3.5 × 10-15 0.01 Si Polished, glass BNC
UPD-500-SD < 500 > 0.6 320 - 1100 90% 800/0.5 3.5 × 10-15 0.01 Si Diffuse, quartz BNC
UPD-500-UP < 500 > 0.6 170 - 1100 90% 800/0.5 3.5 × 10-15 0.01 Si 4) Polished, MgF2 BNC
UPD-500-UD < 500 > 0.6 170 - 1100 90% 800/0.5 3.5 × 10-15 0.01 Si 4) Diffuse, quartz BNC
UPD-3N-IR2-P < 150 6) > 0.4 6) 800 - 2100 75% 300/0.07 1.5 × 10-13 90 InGaAs Polished, glass BNC
UPD-5N-IR2-P < 200 6) > 0.3 6) 800 - 2600 70% 300/0.07 7.0 × 10-13 2000 InGaAs Polished, glass BNC
UPD-2M-IR2-P < 75000 > 0.004 900 - 1700 80% 2000/3.14 4.0 × 10-14 5 InGaAs Polished, glass BNC
UPD-2M-IR2-P-1TEC 3) < 75000 > 0.004 900 - 1700 75% 2000/3.14 1.0 × 10-14 0.3 InGaAs Polished, glass BNC

Notes:
1) The diffuse window reduces the positioning accuracy requirements and increases the damage threshold at the cost of a reduced sensitivity by a factor of approx. three to five. Recommended for high peak power lasers only.
2) This model has negative output. All other models have positive output by default but may be ordered with negative output if required.
3) With TEC cooling module, non-standard housing.
4) Modified material with increased blue / UV sensitivity.
5) Not compatible with the optional filter holder.
6) Greatly improved performance.

 

Power Sources for UPD Series Photodetectors   Related Products
  • Low-Noise Power Supply, Input: 230 V AC (European standard)
    PS-UPD-12-EU: Output: 12 V DC
  • Low-Noise Power Supply, Input: 100 - 240 V AC (for worldwide usage)
    PS-UPD-6-WW
    : Output: 6 V DC
    PS-UPD-9-WW: Output: 9 V DC
    PS-UPD-12-WW: Output: 12 V DC
  • BAT-UPD-6V: Bias Battery, 6 V
  • Broadband Amplifiers BBA Series (amplitude gain: ×10, ×100 or variable ×1÷100)
  • BNC 50 Ω Terminating Load
  • SMA (male) to BNC (female) Adapter
  • SMA to SMA Adapter
  • Attenuator Filter Adapter

 

 

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Phone: +49-551-7706147

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