In the far field, the intensity distribution of the single-mode VCSEL is perfectly Gaussian shaped
850-nm single-mode VCSELs
850-nm single-mode VCSELs are the perfect choice for demanding sensor system applications due to their improved optical characteristics. Higher-order longitudinal and transversal modes are suppressed by the innovative chip design; at the same time, the polarisation is linearly stable.
The absolutely symmetrical and Gaussian-shaped beam profile makes the optical design of your application significantly easier.
A reproducible divergence angle in the range of 20° (1/e2) makes beam guidance easier.
The laser line with a spectral width of a typical figure of 100 MHz makes this laser perfect for spectroscopic applications.
A power input in the range of a few milliwatts allows battery operation in mobile applications.
Optical encoder for high-precision positioning
Single-mode VCSELs are perfectly suited to use in optical encoders due to their Gaussian-shaped beam profile, their low power input, their long coherence length and their outstanding reliability.
FTIR (Fourier-transform infrared spectroscopy)
Due to the low temperature dependence of the emission wavelength (0.06 nm/K) and the narrowband spectral emission of a typical figure of 100 MHz, temperature-stabilised single-mode VCSELs are particularly suitable as a wavelength reference for FTIR spectrometers.
For high-volume applications and highly integrated sensors, we provide this laser diode as a chip. The laser diodes are supplied as chips on a tape here. This delivery format requires a pick & place or a die-bonding process for processing the laser diodes.
VCSELs in a hermetically sealed TO46 housing allow easy handling of the laser diode and are suitable for operation in demanding ambient conditions. In addition, a burn-in test is made possible; an integrated Zener diode reduces the ESD sensitivity.
TO46 with TEC
A package with an integrated TEC is suitable for applications that demand a large temperature window or require spectral stabilisation of the laser diode. The Peltier element makes it possible to precisely regulate the laser temperature using the NTC thermistor; due to the hermeticity of the housing, condensation on the VCSEL can be excluded.
This product range and information may vary depending on the country. Subject to changes to technology, equipment, price and range of accessories. Please get in touch with your local contact person to find out whether the product is available in your country.