VCSELs (Vertical Cavity Surface Emitting Laser) radiate their light perpendicular to the semiconductor chip surface, in comparison to conventional laser diodes, where the light emerges from the edge. The advantages of VCSELs over conventional laser diodes are a circular beam profile, a narrow spectral linewidth, low divergence angle and high wavelength stability. With the new Q-series Laser 2000 offers VCSEL diodes with narrow spectral linewidth (0.4 - 1.2 nm) and Gaussian intensity distribution (TEM00).

At a wavelength of 680 nm, an optical power of 1 mW can be reached at room temperature (0.5 mW at 60 ° C). Here the operating current is 3 mA at 2.7 V. The rise times are at 100 ps. The far-field divergence angle of 9° (FWHM) remains stable over operating temperature and current. The linear polarization (PER> 10 dB) is orientated along chip edge.

These products from the manufacturer Vixar Inc. are all RoHS-compliant. Package options include the industry standard housings TO-46, PLCC4 / PLCC2 and bare chips in 1D or 2D arrays.

The red (680nm) wavelength is ideal for applications requiring beam visibility, such as sensors that must be aligned, absorptive or spectroscopic sensors requiring a particular wavelength, or high resolution applications requiring a small spot size.

The Q-series is designed for OEM applications such as

• position sensing and motion control
• medical devices
• printing and
• bar code scanners.

The Q-series VCSEL are an economical alternative to the S-series with their extremely narrow linewidth (<1pm).

More information at www.laser2000.de/