MID-IR Device Drivers

Application D-41M driver is designed for power supply of Mid-IR LEDs.

Features

• Pulse mode operation (mode that provides maximum peak optical power).
• Adjustment of LED current amplitude, frequency and pulse duration via driver’s jumpers.
• Synchronization input terminal block which allows:
- synchronizing driver with an external device (synchronous detector etc.);
- synchronizing two or more drivers simultaneously;
- setting custom frequency of the LED signal.
• Possibility of synchronization with an external device with the help of synchronization output terminal block.

See D41M Manual for more informotion.

D51M

D51M driver is designed for power supply of Mid-IR LEDs.

Features

• Pulse mode operation (mode that provides maximum peak optical power).
• Adjustment of LED current amplitude, frequency and pulse duration via driver’s jumpers.
• Synchronization input terminal block which allows:
- synchronizing driver with an external device (synchronous detector etc.);
- synchronizing two or more drivers simultaneously;
- setting custom frequency of the LED signal.
• Possibility of synchronization with an external device with the help of synchronization output terminal block.
• Safety system for prevention of LED damage in case of circuit brake.
• Temperature control – possibility to judge LED p-n junction temperature changing by observing voltage changing using current-voltage dependence.

See D51M Manual for more informotion.

mD-1c

Driver mD-1c is designed to provide a cost-effective solution to supply power to mid-IR LEDs.

The driver generate symmetrical unipolar meander (quasi-continuous mode). Such mode provides maximum average optical power from the LED. Signal data (such as amplitude, repetition rate and pulse duration), remains steady while the input voltage may change in the range from 5 to 6 voltage.

See mD-1c Manual for more informotion.

mD-1p

Driver mD-1p is designed to provide a cost- effective solution to supply power to mid-IR LEDs.

The driver generate sequence of pulses (pulse mode). Such mode provides maximum peak optical power from the LED.

See mD-1p Manual for more informotion.

Synchronous detector

Application

SDM synchronous detector measures the voltage signal from the output of photodiode preamplifier and converts it to the DC voltage signal proportional to amplitude of voltage from input.

SDM synchronous detector is optimized for work in a pulse mode, since in this mode the highest signal amplitude and STN ratio can be achieved.

Features

• Three independent channels for detection. One can connect three systems with drivers and preamplifiers and run them through the synchronous detector simultaneously.
• Built-in power supply for preamplifiers.
• Possibility of input polarity inversion using the appropriate jumper. In case of wrong polarity connection from photodiode preamplifier one can simply switch the input polarity inversion jumper.

See SDM Manual for more informotion.

Photodiode preamplifier board for PD

PAB preamplifier is oriented for amplification and conversion of the pulse current signal generated by PDs (photodiodes). Preamplifier enables PD operation at photovoltaic mode (with no reverse bias) – mode in which photodiode becomes the source of photocurrent. PD photocurrent is amplified and converted by preamplifier into voltage signal.

See PAB Manual for more informotion.

Photodiode with a parabolic reflector and a preamplifier

Photodiode with a parabolic reflector with a preamplifier PA in Ø=12mm tube

Standard photodiodes work in two modes of operation: photoconductive (with reverse bias) and photovoltaic (with zero bias). When photodiode works in photovoltaic mode it becomes the source of current.

Photodiode models with preamplifier (-PA) work in photovoltaic mode. Current generated by photodiode is amplified and converted by preamplifier into voltage signal. There is straight correspondence between PD current and resulting output voltage. The signal converted by preamplifier will have the same form, frequency and pulse duration as the photocurrent signal from photodiode. Current into voltage conversion coefficient is constant and depends on given photodiode.

Following models are currently available

• PD24-03-PR-PA and PD24-03-PRW-PA (Lms24PD-03XX). See here for more informotion.

• PD24-05-PR-PA and PD24-05-PRW-PA (Lms24PD-05XX). See here for more informotion.

• PD24-10-PR-PA and PD24-10-PRW-PA (Lms24PD-10XX). See here for more informotion.

• PD36-03-PR-PA and PD36-03-PRW-PA (Lms36PD-03XX). See here for more informotion.

• PD36-05-PR-PA and PD36-05-PRW-PA (Lms36PD-05XX). See here for more informotion.

• PD43-03-PR-PA and PD43-03-PRW-PA (Lms43PD-03XX). See here for more informotion.

• PD43-05-PR-PA and PD43-05-PRW-PA (Lms43PD-05XX). See here for more informotion.

For more information, pleas send email to sales@microsensortech.com