Tunable Diode Laser
has developed a digitally tunable diode laser that has the
capability to emit one or more wavelengths in any desired
order and/or simultaneous selection of more than one wavelength.
Unlike conventional external cavity tunable diode lasers
that depend on mechanical means to scan the laser's wavelength
range sequentially from one end to the other, the DTDL employs
a micromirror array to switch among any wavelengths within
the laser's emission spectrum, in any sequence in microseconds.
The device has immediate applications in optical and infrared
laser spectroscopy for chemical sensing, pollution control
and biomedical applications, as well as wavelength division
multiplexing (WDM) for optical communications.