KOLMAR TECHNOLOGIES


 

KV104 Series

HgCdTe Photodiodes

Features

 

  • High D* at high frequencies
  • Sizes 0.5 um to 0.1 um
  • Wavelength cutoff: 11.5, 8, 4.5 um
  • Linear
  • Custom configurations available

 

 

Applications

 

The KV104 is designed to be used in systems and instruments which require a very sensitive, high speed detector:

 

  • Laser radar
  • Range finders
  • Trace gas spectroscopy
  • IR DIAL
  • Chemical aerosols detection
  • Heterodyne detection

 

 

 

Description

 

Series KV104 MCT photodiodes are designed for wide electrical bandwidth applications. The maximum bandwidth is limited only by detector size, which determines RC time constant. [This series is different form the KLD series, where the response time is limited by the diffusion time.] A 100 um pixel size detector is capable of 100MHz bandwidth operation or greater.

The KV104 Series does not have the amplifier as an integral part of the Dewar. The E Dewar allows the interchange of amplifiers. The amplifier is attached to the Dewar above the side looking window barrel. The connection to the Detector is via a SMA connector at the top, 12 O'Clock, position on the window barrel. There is no cable and the distance to the detector is less than 2 cm. Amplifiers for 50MHz, 100MHz, and 200MHz bandwidth are available.

 

The spectral response characteristics are determined by the MCT bandgap selected. Standard ranges are 2-12 um, 2 - 8 um and 2 - 4.5 um.

 

The responsivity at 11um is greater than 4 Amp/Watt and D* (peak, 10kHz, 60FOV) is greater than 3 x 1010 Jones. Note the smaller size detectors with wide bandwidth amplifiers may be amplifier noise limited.

 

The E Dewar is a side-looking LN2 pour-filled Dewar with an AR coated ZnSe window and 12 hour hold time.

Series KV104: MCT Photodiodes

Series Configurations

 

<

Model*

Wavelength (um)

Peak / Cutoff

Size

(um)

Bandwidth

(Hz)

 

D*(60FOV)

(Jones,typ)

Responsivity

(Amps/Watt)

KV104-0.25-E/11

10.5 >11.5

0.25x0.25

> 80M

3E10

>4

KV104-0.1-E/11

10.5 >11.5

0.1 x 0.1

>200M

2E10

>4

KV104-0.5-E/8

7.2 >8

0.5 x 0.5

>30M

7E10

>3

 

*Key: model-size-package-window/wavelength/options

 

Options

 

  • Various cryogenic packages>
      - hold times up to 24 hours
  • Temperature sensor
  • Windows
    • ZnSe
    • ZnSe wedge
    • Ge
  • Coatings
    • 10.6 u m
    • 2 u m –13 u m
  • Cold-filters
  • Cold stops

    - 60° , 45° ,30°

  • Pixel sizes 0.5 mm to 0.1um
  • Matched amplifiers available

Custom Configurations on Request

 

E Dewar Configuration

E DEWAR

     

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