A spin-optoelectronic detector for the simultaneous measurement of the degree of circular polarization and intensity of a laser beam

Journal Article · Mon Aug 17 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4929326· OSTI ID:22489114

Porwal, S.; Oak, S. M.

Simultaneous measurement of the degree of circular polarization and intensity of a laser beam is essential in advanced photonic applications. However, it is not feasible with conventional helicity dependent detectors where an additional detector is needed to measure the intensity. Here, we report the development of a spin-optoelectronic detector that can measure the degree of circular polarization and the intensity of a laser beam simultaneously. The principle of operation of device is based on the two independent fundamental phenomena occurring in Au/InP hybrid structures, namely, Inverse Spin Hall Effect (ISHE) and the Photo-Voltaic (PV) Effect. The magnitude of ISHE and PV signals is simultaneously measured across the two pairs of contacts that are made on the top of device. No cross talk is observed between the two detectors made on the same chip. The all-electronic compact device is fast, operates at room temperature, and opens up the possibility of many applications in an integrated optoelectronic platform.

• OSTI ID: 22489114
• Journal Information: Applied Physics Letters, Vol. 107, Issue 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
HALL EFFECT
HELICITY
HYBRIDIZATION
INDIUM PHOSPHIDES
LASER RADIATION
LASERS
OPERATION
POLARIZATION
SIGNALS
SPIN
TEMPERATURE RANGE 0273-0400 K