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kHz / MHz / GHz  Balanced Photodetectors, OCT Imaging-Specific Configurations
[ InGaAs & Si : 2600 – 190 nm
, kHz – GHz ]

 

The Dual Balanced Photoreceivers presented here are ideal for minute signal differentiation in heterodyne interferometry, optical coherence tomography – OCT imaging, spatial interferometry and spatial coherence, and optical pulse correlation. They feature a very wide selection of ultra-low noise high-speed photodiodes, in a large variety of photosensitive areas selected for broad spectral response in spectra ranging from mid-SWIR to far-UV, operating at high responsivity, and packaged with a coated optical window or ball lens to enhance free space or fiber coupled optical entry. The photodiodes are coupled to amplifiers, specifically selected for ultra-low noise and linear response over the full operating bandwidth, with independent waveguided signal paths. The output impedance is 50-Ω with DC-coupling on most modules, while some advanced models also feature AC / DC signal coupling at the mixed output. The native pre-mixed amplified signals are available individually for experimental adjustment. High-grade research platforms and chipsets are available enabling multiple gain and bandwidth combinations for high-precision measurements. Custom configurations are offered which cover a variety of options in photodiode area, amplification, optical coupling, operating optical power, detector layout and geometry, and operating bandwidth.All units have connectorized SMA signal outputs which are optimized for low capacitance (~ 1pF), low impedance (50-Ω) instrumentation, data acquisition, and test equipment. The high-speed units specifically require low capacitance semi-rigid cable connections of < 15 cm for full-bandwidth performance. SMA-BNC cables and adapters are optional offerings. The modules are powered by external sources, typically requiring standard ± 15 VDC @ 300-1000 mA – regulated to operate all internal components, including the photodiodes and amplifiers. The bias voltage of each photodiode is regulated fixed / adjustable over the working range. The SWIR models have fixed bias at < 1V. All units are packaged in small plastic modules for convenient operation. 3.5-mm power entry socket and power switch with LED “ON” indication are standard. Metric or SAE mounting holes are provided with recommended-optional nylon hardware.  

 

 

 

                   

   OCT ( Optical Coherence Tomography ) image of human tissue in the SWIR ( 2600 – 1200 nm ) spectrum,
   utilizing the SIR137 ( ultra-high gain, MHz-series)  OCT-Specific dual balanced photodetector modules, by
   Dr. Ernest Chang, Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital.

 

SPECIFICATIONS: ( Please click   to e-mail a quote request & provide your details )

 

MODEL

Type

Spectrum

Photodiode Gain

Mix Sig. Gain

Speed

Responsivity

Area

Dark Current

NEP (fW/rt.Hz)

Coupling *

US / Intl.

SIR003

SWIR InGaAs

2600 – 1200 nm

10k

50X

15 MHz

1.05 A/W @ 2300 nm

0.3-mmD

0.5 μA

0.5 pW

FS / Fiber

1,750.00 / 1,895.00

SIR017

SWIR InGaAs

2600 – 1200 nm

2.5k

20X

60 MHz

1.05 A/W @ 2300 nm

0.3-mmD

0.5 μA

0.5 pW

FS / Fiber

1,750.00 / 1,895.00

 

 

 

 

 

 

 

 

 

 

 

 

SIR125

SWIR InGaAs

2600 – 1200 nm

1, 2.5, 5k

20,50,100X

60 MHz

1.05 A/W @ 2300 nm

0.3-mmD

0.5 μA

0.5 pW

FS / Fiber

3,995.00 / 4,495.00

SIR137

SWIR InGaAs

2600 – 1200 nm

10,25,50k

50,100,200X

15 MHz

1.05 A/W @ 2300 nm

0.3-mmD

0.5 μA

0.5 pW

FS / Fiber

4,995.00 / 5,595.00

SIR * * *

SWIR InGaAs

2600 – 1200 nm

CUSTOM

CUSTOM

CUSTOM

1.05 A/W @ 2300 nm

0.3 / 1-mmD

 

 

FS / Fiber

CONTACT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODEL

Type

Spectrum

Photodiode Gain

Mix Sig. Gain

Speed

Responsivity

Area

Dark Current

NEP (fW/rt.Hz)

Coupling *

US / Intl.

IRN007

NIR InGaAs

1800 – 800 nm

1.3k

15X

150 MHz

0.95 A/W @ 1550 nm

0.3-mmD

0.1 nA

7

FS / Fiber

1,100.00 / 1,250.00

IRN012

NIR InGaAs

1800 – 800 nm

1k

8X

300 MHz

0.95 A/W @ 1550 nm

0.1-mmD

0.01 nA

3

FS / Fiber

1,450.00 / 1,575.00

IRN025

NIR InGaAs

1800 – 800 nm

0.6k

3X

600 MHz

0.95 A/W @ 1550 nm

0.1-mmD

0.01 nA

3

FS / Fiber

1,850.00 / 2,050.00

 

 

 

 

 

 

 

 

 

 

 

 

IRN031

NIR InGaAs

1800 – 800 nm

1, 5, 10k

15X

150 MHz

0.95 A/W @ 1550 nm

0.3-mmD

0.1 nA

7

FS / Fiber

1,650.00 / 1,795.00

IRN057

NIR InGaAs

1800 – 800 nm

1, 5, 10M

1000X

300 kHz

0.95 A/W @ 1550 nm

0.1-mmD

0.01 nA

3

FS / Fiber

1,750.00 / 1,895.00

 

 

 

 

 

 

 

 

 

 

 

 

IRN133

NIR InGaAs

1800 – 800 nm

1, 2.5, 5k

15,30,50X

150 MHz

0.95 A/W @ 1550 nm

0.3-mmD

0.1 nA

7

FS / Fiber

2,995.00 / 3,450.00

IRN152

NIR InGaAs

1800 – 800 nm

10,25,50k

25,50,100X

15 MHz

0.95 A/W @ 1550 nm

0.1-mmD

0.01 nA

3

FS / Fiber

3,995.00 / 4,450.00

IRN * * *

NIR InGaAs

1800 – 800 nm

CUSTOM

CUSTOM

CUSTOM

0.95 A/W @ 1550 nm

CUSTOM

 

 

FS / Fiber

CONTACT

 

 

 

 

 

 

 

 

 

 

 

 

IGD005

NIR InGaAs

1800 – 800 nm

44dB

2X

1 GHz

0.95 A/W @ 1550 nm

0.08-mmD

0.01 nA

3

FS / Fiber

1,550.00 / 1,700.00

IGD007

NIR InGaAs

1800 – 800 nm

40dB

1.5X

1.5 GHz

0.95 A/W @ 1550 nm

0.08-mmD

0.01 nA

3

FS / Fiber

2,000.00 / 2,200.00

IGD014

NIR InGaAs

1800 – 800 nm

54dB

10X

1 GHz

0.95 A/W @ 1550 nm

0.08-mmD

0.01 nA

3

FS / Fiber

5,995.00 / 6,600.00

IGD * * *

NIR InGaAs

1800 – 800 nm

CUSTOM

CUSTOM

CUSTOM

0.95 A/W @ 1550 nm

CUSTOM

 

 

FS / Fiber

CONTACT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODEL

Type

Spectrum

Photodiode Gain

Mix Sig. Gain

Speed

Responsivity

Area

Dark Current

NEP (fW/rt.Hz)

Coupling *

US / Intl.

SDX003

Si (IR-Vis-UV)

1000 – 350 nm

1.3k

15X

150 MHz

0.6 A/W @ 800 nm

0.75-mmD

0.01 nA

3

FS / Fiber

1,050.00 / 1,200.00

SDX012

Si (IR-Vis-UV)

1000 – 350 nm

1k

8X

300 MHz

0.6 A/W @ 800 nm

0.75-mmD

0.01 nA

3

FS / Fiber

1,350.00 / 1,475.00

SDX037

Si (IR-Vis-UV)

1000 – 350 nm

0.6k

3X

600 MHz

0.5 A/W @ 750 nm

0.38-mmD

0.001 nA

1.2

FS / Fiber

1,750.00 / 1,950.00

 

 

 

 

 

 

 

 

 

 

 

 

SDX052

Si (IR-Vis-UV)

1000 – 350 nm

1, 5, 10k

15X

150 MHz

0.6 A/W @ 800 nm

0.75-mmD

0.01 nA

3

FS / Fiber

1,550.00 / 1,675.00

SDX078

Si (IR-Vis-UV)

1000 – 350 nm

1, 5, 10M

1000X

300 kHz

0.6 A/W @ 800 nm

0.75-mmD

0.01 nA

3

FS / Fiber

1,650.00 / 1,795.00

 

 

 

 

 

 

 

 

 

 

 

 

SDX173

Si (IR-Vis-UV)

1000 – 350 nm

1, 2.5, 5k

15,30,50X

150 MHz

0.6 A/W @ 800 nm

0.75-mmD

0.01 nA

3

FS / Fiber

2,995.00 / 3,450.00

SDX318

Si (IR-Vis-UV)

1000 – 350 nm

10,25,50k

25,50,100X

15 MHz

0.6 A/W @ 850 nm

2.85-mmD

0.1 nA

10

FS / Fiber

3,995.00 / 4,450.00

SDX * * *

Si (IR-Vis-UV)

 

CUSTOM

CUSTOM

CUSTOM

 

 

 

 

FS / Fiber

CONTACT

 

 

 

 

 

 

 

 

 

 

 

 

GDP025

Si (IR-Vis-UV)

1000 – 350 nm

44dB

2X

1 GHz

0.5 A/W @ 750 nm

0.35-mmD

0.001 nA

1.2

FS / Fiber

1,550.00 / 1,700.00

GDP031

Si (IR-Vis-UV)

1000 – 350 nm

40dB

1.5X

1.5 GHz

0.5 A/W @ 750 nm

0.3-mmD

0.001 nA

1.2

FS / Fiber

2,000.00 / 2,200.00

GDP078

Si (IR-Vis-UV)

1000 – 350 nm

54dB

10X

1 GHz

0.4 A/W @ 650 nm

0.08-mmD

0.001 nA

1.2

FS / Fiber

5,995.00 / 6,600.00

GDP * * *

Si (IR-Vis-UV)

 

CUSTOM

CUSTOM

CUSTOM

 

CUSTOM

 

 

FS / Fiber

CONTACT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODEL

Type

Spectrum

Photodiode Gain

Mix Sig. Gain

Speed

Responsivity

Area

Dark Current

NEP (fW/rt.Hz)

Coupling *

US / Intl.

UVM017

UV-Si

1100 – 190 nm

5k

25X

> 1.5 MHz

0.12 A/W @ 190 nm

1-mmD

0.01 nA

6

FS / Fiber

1,050.00 / 1,200.00

UVM033

UV-Si

1100 – 190 nm

1M

25X

> 0.1 MHz

0.12 A/W @ 190 nm

1-mmD

0.01 nA

6

FS / Fiber

1,050.00 / 1,200.00

 

 

 

 

 

 

 

 

 

 

 

 

UVM055

UV-Si

1100 – 190 nm

2.5, 5,10k

100X

> 1.5 MHz

0.12 A/W @ 190 nm

1-mmD

0.01 nA

6

FS / Fiber

1,550.00 / 1,675.00

UVM078

UV-Si

1100 – 190 nm

1, 5, 10M

1000X

> 300 kHz

0.12 A/W @ 190 nm

1-mmD

0.01 nA

6

FS / Fiber

1,650.00 / 1,795.00

 

 

 

 

 

 

 

 

 

 

 

 

UVM123

UV-Si

1100 – 190 nm

1, 2.5, 5k

15,30,50X

1 MHz

0.12 A/W @ 190 nm

1-mmD

0.01 nA

6

FS / Fiber

2,995.00 / 3,450.00

UVM137

UV-Si

1100 – 190 nm

10,25,50k

25,50,100X

1 MHz

0.12 A/W @ 190 nm

1-mmD

0.01 nA

6

FS / Fiber

3,995.00 / 4,450.00

UVM * * *

UV-Si

1100 – 190 nm

CUSTOM

CUSTOM

CUSTOM

0.12 A/W @ 190 nm

CUSTOM

 

 

FS / Fiber

CONTACT

 

 

 

 

 

 

 

 

 

 

 

 

* FC, SMA, ST available – Additional Cost USD 110.00
**
SMA-BNC adapter optional

 

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kHz / MHz Signal Sum / Signal Difference Dual Channel Photodetectors
[ InGaAs & Si : 2600 – 190 nm
, kHz – MHz ]

The VAS, UAN, NAI, and EAX are high responsivity DUAL photodetector units, which feature precision low noise Si- and InGaAs-based photodiodes, coupled with a 300-MHz sum or difference amplifier. These detectors are ideal for heterodyne (modulated), or pulsed photodetection. They feature a wide selection of ultra-low noise high-speed photodiodes in a variety of photosensitive areas, broad spectral response, and high responsivity with coated optical windows or ball lens for fiber coupling. Amplifiers are selected for low noise and linear response over the operating bandwidth. The output impedance is 50-Ω and some models feature AC / DC signal coupling at mixed output connector. All sum / difference units are optimized for low capacitance (~ 1pF) low impedance (50-Ω) instrumentation / test equipment. The high speed units require low capacitance semi-rigid cable connections of < 15 cm for full bandwidth performance. SMA-BNC adapters are optional. The bias voltage is fixed / regulated-adjustable over the working range of each photodiode. The SWIR models have max bias at under 1V. They are packaged in small plastic modules for convenient operation. A 3.5-mm power entry socket and power switch with LED “ON” indication are standard. Metric and/or SAE mounting holes are provided with recommended optional nylon hardware.

The specific features on these modules include:

 [1]  Three switchable photodiode bias settings (on internal microswitch; excl. EAXxxx). 
       This feature allows the user to adjust the performance for optimal noise and bandwidth
       at particular power level and speed requirements.

 [2]  Three amplifier gain-bandwidth settings on an internal microswitch for full input power flexibility.

 [3]  Internal switch selection of sum-or-difference output with 10X gain

SPECIFICATIONS: ( Please click   to e-mail a quote request & provide your details )

MODEL

VAS025*

UAN013

NAI037*

EAX083*

Photodiodes

Planar Si

UV-Si

Planar InGaAs

SWIR InGaAs

Active Area (μmxμm)

0.75-mmD

1-mmD

0.3-mmD

0.3-mmD

Spectral Range (nm)

1100 to 350 [FS]

1100 to 190 [FS]

1800 to 800

2600 to 1200

SSGain / Bandwidth (MHz)

1 kV/A / 300 MHz
1.3 kV/A / 150 MHz
10 kV/A / 20 MHz

5 kV/A / 1.5 MHz
10 kV/A / 1.5 MHz
1 MV/A / 0.3 MHz

1 kV/A / 300 MHz
1.3 kV/A / 150 MHz
10 kV/A / 20 MHz

2.5 kV/A / 60 MHz
10 kV/A / 20 MHz
1 MV/A / 0.3 MHz

± Gain / Bandwidth (MHz)

10 / 300

10 / 1.5

10 / 300

10 / 60

Optical Coupling

Free space / Fiber*

Free space / Fiber*

Free space / Fiber*

Free space / Fiber*

Photodiode Power

0, 1.5 – 5, 5 VR

0, 1.5 – 5, 5 VR

0, 1.5 – 5, 5 VR

0, -1 V

US / Intl.

2,995.00 / 3,500.00

2,995.00 / 3,500.00

2,995.00 / 3,500.00

3,195.00 / 3,750.00

External Power ( PS-15TH )

±15 VDC / 300 mA

±15 VDC / 300 mA

±15 VDC / 300 mA

±15 VDC / 300 mA

Delivery (weeks)

1

1

1

1

* FC, SMA, ST available – Additional Cost USD 110.00
**
SMA-BNC adapter optional

 

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