Optical Switching of a Quantum Cascade Laser in Continuous Wave Operation
Gang Chen1,2, Seong-wook Park1, I-Chun A. Chen1, Clyde G. Bethea1, Rainer Martini1
1Department of Physics and Engineering Physics, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 07030, USA2College of Optoelectronic Engineering, Chongqing University, Chongqing 400044
Optical Switching of a Quantum Cascade Laser in Continuous Wave Operation
Gang Chen1,2, Seong-wook Park1, I-Chun A. Chen1, Clyde G. Bethea1, Rainer Martini1
1Department of Physics and Engineering Physics, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 07030, USA2College of Optoelectronic Engineering, Chongqing University, Chongqing 400044
摘要We demonstrate an optical switching in a middle infrared continuous-wave quantum cascade laser operated in single mode by illuminating its front facet with a near infrared laser. A decrease in the laser net gain is observed in the amplified spontaneous emission spectrum. This is attributed to an increase of the carrier concentration caused by the near infrared excitation. The net gain reduction allows the quantum cascade laser to be completely switched off from single mode lasing. This optical switching can be used to convert near infrared signals into middle infrared signals for free space communication.
Abstract：We demonstrate an optical switching in a middle infrared continuous-wave quantum cascade laser operated in single mode by illuminating its front facet with a near infrared laser. A decrease in the laser net gain is observed in the amplified spontaneous emission spectrum. This is attributed to an increase of the carrier concentration caused by the near infrared excitation. The net gain reduction allows the quantum cascade laser to be completely switched off from single mode lasing. This optical switching can be used to convert near infrared signals into middle infrared signals for free space communication.
(Quantum well devices (quantum dots, quantum wires, etc.))
引用本文:
Gang Chen;Seong-wook Park;I-Chun A. Chen;Clyde G. Bethea;Rainer Martini. Optical Switching of a Quantum Cascade Laser in Continuous Wave Operation[J]. 中国物理快报, 2010, 27(1): 18501-018501.
Gang Chen, Seong-wook Park, I-Chun A. Chen, Clyde G. Bethea, Rainer Martini. Optical Switching of a Quantum Cascade Laser in Continuous Wave Operation. Chin. Phys. Lett., 2010, 27(1): 18501-018501.
[1] Faist J, Capasso F, Sivco D L, Sirtori C, Hutchinson A Land Cho A Y 1994 Science, New Series 264 553 [2] Martini R, Bethea C, Capasso F, Gmachl C, Paiella R,Whittaker E A, Hwang H Y, Sivco D L, Baillargeon J N and Cho A Y2002 Electron. Lett. 38 181 [3] Martini R, Gmachl C, Falciglia J, Curti F G, Bethea C G,Capasso F, Whittaker E W, Paiella R, Tredicucci A, Hutchinson A L,Sivco D L and Cho A Y 2001 Electron. Lett. 37 1290 [4] Martini R, Capasso F, Paiella R, Colombelli R, Gmachl C,Myers T L, Taubman M S, Williams R M, Bethea C G, Unterrainer K,Hwang H Y, Sivco D L, Cho A Y, Sergent A M, Liu H C and Whittaker EA 2002 IEEE J. Quant. Electron. 38 511 [5] Martini R and Whittaker E A 2005 J. Opt. Fiber.Commun. Rep. 2 279 [6] Hinklet E D and Zuev V E 1976 Laser Monitoring of theAtmosphere (Heidelberg: Springer) [7] Corrigan P, Martini R, Whittaker E A and Bethea C 2009 Opt. Express 17 4355 [8] Liu H C and Capasso F 2000 Intersubband Transition inQuantum Wells: Physics and Device Application I, Semiconductors andSemmetals 62 (San Diego: Academic) [9] Xiong D Y, Li N, Li Z F, Zhen H L and Lu W 2007 Chin.Phys. Lett. 24 1403 [10] Zervos C, Frogley M D, Phillips C C, Kundys D O, Wilson LR, Hopkinson M and Skolnick M S 2007 Appl. Phys. Lett. 90 053505 [11] Chen G, Beathe C G, Martini R, Grant P D, Dudek R and LiuH C 2009 Appl. Phys. Lett. 95 101104 [12] Aellen T, Beck M, Hoyler N, Giovannini M, Faist J andGini E 2006 J. Appl. Phys. 100 043101 [13] Jovanovi\'c V D, Indjin D, Vukmirovi\'c N, Ikoni\'c Z,Harrison P, Linfield E H, Page H, Marcadet X, Sirtori C, Worrall C,Beere H E and Ritchie D A 2005 Appl. Phys. Lett. 86211117 [14] Hakki B W and Paoli T L 1975 J. Appl. Phys. 46 1299
2010, Vol. 27 
