VCSEL Laser Diode 1512nm, TO-5, w/TEC
Tunable single mode VCSEL (models covering the wavelength range from 1512nm to 2004nm)
Thorlabs offers a family of VCSEL Laser Diodes that are ideally suited for Tunable Diode Laser Absorbtion
Spectroscopy (TDLAS) gas detection and monitoring, industrial process control, air quality monitoring,
and exhaust testing. These unique VCSEL diodes, manufactured by VERTILAS, allow new applications in
the fields of gas absorption spectroscopy and high speed data communications. The Buried Tunnel Junction
(BTJ) technology eliminates the overheating problem often attributed to VCSEL diodes. These BTJ
structures have improved thermal conductivity and reduced device thickness. Consequently, the BTJ
VCSELs exhibit a reduced temperature dependency on the threshold current.
The BTJ-VCSELs offer excellent single frequency performance (see Figure 1) at power
levels around 1mW. Due to their ability to use current for wavelength modulation instead
of temperature (see Figure 2), these VCSELs allow direct wavelength modulation rates of
up to 4GHz. This makes the BTJ VCSELs an ideal light source for optical sensing
applications in the near infrared, especially where fast wavelength modulation is required.
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