Description:
Princeton Docket # 10-2616
Broadly
tunable QC lasers are ideal candidates for multi-analyte mid-infrared
spectroscopy application. However,
the maximum tuning range is usually limited by the inherently narrow gain
spectrum of intersubband transitions.
Princeton researchers have developed a ¿continuum-to-bound¿ QC laser,
with two lower injector states rather than one, strongly coupled with the upper
laser state at the operational electrical fields so that three transitions
contribute to a broad gain spectrum. The strong coupling facilitates carrier
transport from the injectors to the active region.
Applications
·
Broadband
amplifier
·
Widely
wavelength tunable lasers
Advantages
·
Broadened
tuning range
·
Facilitated
carrier transport
Publication
Y.
Yao, W.O. Charles, T. Tsai, J.X. Chen, G. Wysocki, and C.F. Gmachl, ¿Broadband
quantum cascade laser gain medium based on a "continuum-to-bound" active region
design¿, Appl. Phys. Lett. 96(21)
211106 (2010)
Principal Investigator
Clair
Gmachl, Eugene
Higgins Professor of Electrical Engineering
and Director
of MIRTHE, is the
principle inventor for these QC
laser technologies. Her
research group
is working on the development of new
quantum devices, especially lasers, and their optimization for sensor systems
and their applications in environment and health. Among the numerous
honors Professor Gmachl has received are Election to Austrian Academy of
Sciences as Corresponding Member Abroad (2008), MacArthur Fellow (2005), and
Popular Science Magazine's list of Brilliant 10
(2004).
Intellectual Property
status
Patent
protection is pending.