What are PC detectors?
What are PV detectors?
What are the immersion lens? How they impact measurement of IR radiation?
How thermoelectric coolers (TEC) work?
What are standard TEC parameters?
What is the best preamplifier in VIGO’s offer?
The broad line of preamplifiers is specifically designed for VIGO HgCdTe or III-V detectors. Each preamplifier is optimized to work with a particular type of detector. The preamplifier ensures stable work in all conditions and the highest signal to noise ratio of the whole system. There is no such thing as the best preamplifier. Each of the preamplifiers is specialized in its own category. For example µIP preamplifier is very small, PIP preamplifier can be programmable and FIP preamplifier can be very fast. For more information about preamplifiers for your applications ask our Sales Department!
What types of windows customer can choose?
VIGO thermoelectrically cooled detectors are typically provided with:
- 3° wedged Al2O3 windows (wAl2O3)
- 3° wedged ZnSe AR coated windows (wZnSeAR)
3° wedge prevents “fringing” – interference from stray back reflections. We offer windows optimized for different spectral bands, as well. VIGO detector windows is presented in the figure below.
Windows can be anti-reflection (AR) coated on two surfaces. We can mount windows provided by the user as well as filters. For more information contact our Sales Department!
When do you bias PV detectors?
We bias our PV detectors in cases when the higher speed of the detector is needed. If a higher frequency band is required, we need to speed up the detector (by biasing). Preamplifiers for biased detectors must be AC coupled.
What temperatures can III-V materials withstand ?
There is a possibility to cool it down to liquid helium temperature. As for the opposite side, we can heat it up to 200°C what makes it convenient for some of the applications. Ask Sales Department for our brand new product based on III-V materials!
What is the lifetime of VIGO’s detectors?
Lifetime strongly depends on temperature of storage and temperature of operation. At normal temperatures lifetime exceed 5 years but many customers are using our detectors for more than 10 years in laboratory applications. Usually at field applications, mechanical wear-out of optoelectronic system is main reason for end-of-life replacements.