A kind of photoluminescence quenching, in which the time-resolved photoluminescence is modulated by a THz pulse, has been theoretically investigated by performing the ensemble Monte Carlo method in bulk gallium arsenide (GaAs) at room temperature. The quenching ratio could reach up to 50% under a strong THz field (100 kV/cm). The range in which luminescence quenching is linearly proportional to the THz field could be over 60 kV/cm. On the basis of these results, a principle for THz modulation and coherent detection is proposed.
© 2012 Optical Society of America
Original Manuscript: December 29, 2011
Revised Manuscript: February 28, 2012
Manuscript Accepted: March 4, 2012
Published: April 23, 2012
Zheng Chu, Jinsong Liu, and Kejia Wang, "Coherent detection of THz waves based on THz-induced time-resolved luminescence quenching in bulk gallium arsenide," Opt. Lett. 37, 1433-1435 (2012)