It is often necessary to quantitatively assess the quality, performance, and characteristics of laser diodes. This is done through performing a series of experiments and obtaining certain …
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. …
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 …
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 …
In many applications, active temperature control improves the performance of optoelectronic devices. In most solid-state detectors, noise decreases with operating temperature. Responsivity …
Thermally sensitive resistors (thermistors) are used widely in laser diode and detector cooling applications because of their high sensitivity, small size, ruggedness, fast response …
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 …
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 …
Thermistors provide an inexpensive and accurate temperature monitor for use with laser diodes. The nonlinear resistancetemperature characteristics of a Negative- Temperature Coeffi …
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 …
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 …
Relatively high peak powers and effi cient operation have made pulsed laser diodes ideal for applications such as solid-state laser pumping and range fi nding. These higher peak powers …
This Application Note discusses methods for optimizing the TEC drive current for optimum operation in heating and cooling applications. Thermoelectric coolers (TECs) are widely used …
This application note explains the four Telcorida recognized threshold calculation methods, and why each method will result in a slightly different threshold value.
There are several methods of testing the quality of the bond, ranging from the destructive, such as a sheer test where the chip is physically broken off its sub-mount, to non-destructive, …
The AD590 is a linear thermal sensor which acts as a constant current source. It produces a current, I, which is directly proportional to absolute temperature, over its useful range …
The ever increasing demand for telecommunications bandwidth is driving the market for the components that make up fi ber-optic networks. This article presents basic principles of passive …
There are many companies that manufacture temperature controllers with various levels of complexity. These instruments use different algorithms and control loops to maintain set temperature. …
A typical application in laser diode test is the characterization of laser output over wide temperature ranges, typically from 0°C to 85°C. Quick changes to and rapid stabilization …
The external modulation feature found on many ILX Lightwave current sources is a very fl exible circuit that can be used for a wide variety of applications. If the task is to slightly …
Ultra-High Velocity