Application Notes

Measuring Linewidth Source with OMH-6700 - AN16

 

Application Notes

The OMH-6700B series of optical measurement heads measure wavelength to within ±0.5 nm accuracy for the 6730B series and to within ±1 nm for the 6720B series for narrow linewidth sources. Many sources such as LED’s and laser diodes may have wider lin...

Using a Power Wavehead for Emitter Level Screening of High Power Laser Diode Bars - AN32

 

Application Notes

Emitter level screening has been shown to be an effective tool for testing high power laser diode bars and stacks. Measurement of individual emitter output power, wavelength, and polarization purity allow the identification of defective individual em...

Calibration and Traceability of ILX Lightwave Optical Power Meters - AN36

 

Application Notes

Traceability refers to an unbroken chain of calibration transfers from a known standard to the instrument in question. At ILX Lightwave, this chain of traceability begins with the primary cryogenic radiometer standards maintained by the Optical Techn...

Controlling Temperatures of Laser Diodes Thermoelectrically - AN01

 

Application Notes

In many applications, active temperature control improves the performance of optoelectronic devices. In most solid-state detectors, noise decreases with operating temperature. Responsivity also varies with operating temperature and therefore must be ...

Selecting and Using Thermistors for Temperature Control - AN02

 

Application Notes

Thermally sensitive resistors (thermistors) are used widely in laser diode and detector cooling applications because of their high sensitivity, small size, ruggedness, fast response times, and low cost. When used properly with a thermoelectric (TE) c...

Protecting Your Laser Diode - AN03

 

Application Notes

It’s been said that there are two types of researchers - those who have blown a laser diode and those who will. While that may be an exaggeration, it’s certainly true that today’s lab envorinments pose a greater threat than ever to laser diodes. Furt...

Laser Diode Characteristics Overview - AN05

 

Application Notes

Diode lasers have been called “wonderful little devices.” They are small and effi cient. They can be directly modulated and tuned. These devices affect us daily with better clarity in our telephone system, higher fi delity in the music we play at hom...

Thermistor Calibration and Steinhart-Hart - AN04

 

Application Notes

Thermistors provide an inexpensive and accurate temperature monitor for use with laser diodes. The nonlinear resistancetemperature characteristics of a Negative- Temperature Coeffi cient (NTC) thermistor may be modeled to a high degree of accuracy us...

Choosing the Right Laser Diode Mount for Your Application - AN06

 

Application Notes

The multitude of laser diode packages available today make selecting the correct mount for laboratory, development, or production testing seem a daunting task. This Application Note will help you choose the ILX Lightwave laser diode mount suitable fo...

Mode Hopping in Semiconductor Laser Diodes - AN08

 

Application Notes

In this Application Note, we show that mode hopping is directly correlated to noise in the total intensity, and that this noise is easily detected by a photodiode. We also show that there are combinations of laser case temperature and injection curre...
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