[1] L.Esaki,R.Tsu.Superlattice and negative differential conductivity in semiconductors[J].IBM J.Res.Dev.,1970,14(1):61-65
[2] A.Y.Cho,M.Panishi,I.Hayashi.Molecular beam epitaxy of GaAs,AlxGa1-xAs and GaP[C].Proc.Symp.GaAs and Related Compounds,1970,2:18
[3] A.Y.Cho.Film deposition by molecular beam techniques[J].J.Vac.Sci.Technol.,1971,8(5):S31-S38
[4] R.F.Kazarinov,R.A.Suris.Possibility of the amplification of electromagnetic waves in a semiconductor with a superlattice[J].Sov.Phys.Semicond.,1971,5(4):707-709
[5] F.Capasso,K.Mohammed,A.Y.Cho.Resonant tunneling through double barriers,perpendicular quantum transport phenomena in superlattices,and their device applications[J].IEEE J.Quantum Electron.,1986,QE-22:1853-1869
[6] F.Capasso.Band gap engineering:from physics and materials to new semiconductor devices[J].Sciences,1987,235(4785):172-176
[7] H.C.Liu.A novel superlattice infrared source[J].J.Appl.Phys.,1988,63(8):2856-2858
[8] A.Y.Cho.Advances in molecular beam epitaxy (MBE)[J].J.Crystal Growth,1991,111(1-4):1-13
[9] J.Faist,F.Capasso,D.L.Sivco et al..Quantum cascade laser[J].Science,1994,264(5158):553-556
[10] A.Z.Li,J.X.Chen,Q.K.Yang et al..GSMBE grown infrared quantum cascade laser structures[J].J.Crystal Growth,1999,201-202:901-904
[11] F.Q.Liu,Y.Z.Zhang,Q.S.Zhang et al..High performance strain-compensated InGaas/InAlAs quantum cascade lasers[J].Semicon.Sci.Technol.,2000,15(12):L44-L46
[12] A.Z.Li,H.Li,G.Y.Xu et al..Key issues associated with low threshold current density for InP-based quantum cascade lasers[J].J.Crystal Growth,2007,301-302:129-133
[13] Yu Guo,F.Q.Liu,Z.G.Wang et al..8 mm strain-compensated quantum cascade laser operating at room temperature[J].Semicond.Sci.Technol.,2005,20(8):844-846
[14] Xiu-Zhen Lu,Feng-Qi Liu,Jun-Qi Liu et al..High temperature operation of 5.5 μm strain-compensated quantum cascaded lasers[J].Chin.Phys.Lett.,2005,22(12):3077-3079
[15] L.Li,Y.Shao,J.Q.Liu et al..High-power operation of uncoated strain-compensated quantum cascade lasers at 4.8 mm[J].Chin.Phys.Lett.,2007,24(12):3428-3430
[16] A.Z.Li,G.Y.Xu,Y.G.Zhang et al..Low threshold distribution feedback quantum cascade lasers at 7.6 mm grown by gas source molecular beam epitaxy[J].J.Crystal Growth,2005,278:770-773
[17] Gangyi Xu,Aizhen Li,Yaoyao Li et al..Low threshold current density distributed feedback quantum cascade lasers with deep top gratings[J].Appl.Phys.Lett.,2006,89(16):161102
[18] Zhang Yonggang,Xu Gongyi,Li Aizhen et al..Pulse wavelength scan of room temperature Mid-infrared distributed feedback quantum cascade lasers for N2O gas detection[J].Chin.Phys.Lett.,2006,23(7):1780-1782
[19] G.Y.Xu,A.Z.Li.Interface phonons in the active region of a quantum cascade laser[J].Phys.Rev.B,2005,71:235304
[20] Li Hua,Han Yingjun,Tan Zhiyong et al..Device fabrication of semi-insulating surface-plasmom terahertz quantum-cascade lasers[J].Acta Physica Sinica,2010,59(3):2169-2172
[21] J.Faist,F.Capasso,C.Sirtori et al..Vertical transition quantum cascade with Bragg confined excited state[J].Appl.Phys.Lett.,1995,66(5):538-540
[22] J.Faist,F.Capasso,C.Sirtori et al..High power mid-infrared (λ-5 mm) quantum cascade lasers operating above room temperature[J].Appl.Phys.Lett.,1996,68(26):3680-3682
[23] G.Scamarcio,F.Capasso,C.Sirtori et al..High-power infrared (8-micrometer wavelength) superlattice lasers[J].Science,1997,276(5313):773-776
[24] J.Faist,M.Beck,T.Lellen et al..Quantum-cascade lasers based on a bound-to-continuum transition[J].Appl.Phys.Lett.,2001,78(2):147-149
[25] M.Beck,D.Hofstetter,T.Aellen et al..Continuous wave operation of a mid-infrared semiconductor laser at room temperature[J].Science,2002,295(5553):301-305
[26] S.R.Darvish,S.Slivken,A .Evans et al..Room-temperature,high-power,and continuous-wave operation of distributed-feedback quantum-cascade lasers at λ-9.6 mm[J].Appl.Phys.Lett.,2006,88(20):201114
[27] R.Khler,A.Tredicucci,F.Beltram et al..Terahertz semiconductor-heterostructure laser[J].Nature,2002,417(6885):156-159
[28] R.Q.Yang.Infrared laser based on intersubband transitions in quantum wells[J].Superlattices and Microstructure,1995,17(1):77-82
[29] L.Diehl,D.Bour,S.Corzine et al..Pulsed- and continuous-mode operation in high temperature of strained quantum-cascade lasers grown by low-pressure metal organic vapor-phase epitaxy[J].Appl.Phys.Lett.,2006,88(4):041102
[30] M.Razeghi.High-performance InP-based mid-IR quantum cascade lasers[J].IEEE J.Sel.Top.Quant.,2009,15(3):941
[31] Y.Bai,S.Slivken,S.Kuboya et al..Quantum cascade lasers that emit more light than heat[J].Nature Photonics,2010,4(2):99-102
[32] M.Razeghi,S.Slivken,Y.Bai et al..High power quantum cascade lasers[J].New J.Phys.,2009,11(12):125017
[33] R.Colombelli,F.Capasso,C.Gmachl et al..Far-infrared surface-plasmon quantum-cascade lasers at 21.5 mm and 24 mm wavelength[J].Appl.Phys.Lett.,2001,78(18):2620-2622
[34] M.P.Semtsiv,M.Wienold,S.Dressler et al..Short-wavelength (λ≈3.05 mm) InP-based strain-compensated quantum-cascade laser[J].Appl.Phys.Lett.,2007,90(5):051111
[35] K.Ohtani,H.Ohno.Mid-infrared intersubband electroluminescence in InAs/GaSb/AlSb type Ⅱ cascade structures[J].Physica E:Low-Dimensional Systems and Nanostructures,2000,7(1-2):80-83
[36] O.Cathabard,R.Teissier,J.Dvenson et al..Quantum cascade lasers emitting near 2.6 mm[J].Appl.Phys.Lett.,2010,96(14):141110
[37] B.S.Williams,S.Kumar,Q.Hu et al..Operation of terahertzquantum-cascade lasers at 164 K in pulsed mode and 117 K in continuous-wave mode[J].Opt.Express,2005,13(9):3331-3339
[38] C.Walther,M.Fischer,G.Scalari et al..Quantum cascade laser operating from 1.2 to 1.6 Thz[J].Appl.Phys.Lett.,2007,91(13):131122
[39] J.Faist,G.Scalari,C.Walther et al..2007 Materials Research Society (MRS) Spring Meeting,San Fransisco,California,April 2007
[40] C.Zhu,Y.G.Zhang,A.Z.Li et al..Analysis of key parameters affecting the thermal behavior and performance of quantum cascade lasers[J].J.Appl.Phys.,2006,100(5):053105
[41] R.Colombelli,K.Srinivasan,M.Troccoli et al..Quantum cascade surface-emitting photonic crystal laser[J].Science,2003,302(5649):1374-1377
[42] S.Hfling,J.Heinrich,Ho.Hofmann et al..Photonic crystal quantum cascade lasers with improved threshold characteristics operating at room temperature[J].Appl.Phys.Lett.,2006,89(9):91113
[43] G.Y.Xu,R.Colombelli,R.Braive et al..Surface-emitting mid-infrared quantum cascade lasers with high-contrast photonic crystal resonators[J].Opt.Express,2010,18(11):11979-11989
[44] G.Y.Xu,Y.Chassagneux,R.Colombelli et al..Polarized single-lobed surface emission in mid-infrared,photonic-crystal,quantum-cascade lasers[J].Opt.Lett.,2010,35(6):859
[45] R.Maulini,M.Beck,J.Faist et al..Broadband tuning of external cavity bound-to-continuum quantum-cascade lasers[J].Appl.Phys.Lett.,2004,84(10):1659-1661
[46] R.Maulini,A.Mohan,M.Giovannini et al..External cavity quantum-cascade laser tunable from 8.2 to 10.4 mm using a gain element with a heterogeneous cascade[J].Appl.Phys.Lett.,2006,88(20):201113
[47] Y.A.Bakhirkin,A.A.Kosterev,R.F.Curl et al..Sub-ppbv nitric oxide concentration measurements using cw thermoelectrically cooled quantum cascade laser-based integrated cavity output spectroscopy[J].Appl.Phys.B,2006,82(11):149-154
[48] E.Brundermann,M.Havenith,G.Scalari et al..Turn-key compact high temperature terahertz quantum cascade lasers:imaging and room temperature detection[J].Opt.Express,2006,14(5):1829-1841
[49] A.Amann,D.Smith.Breath Analysis for Clinical Diagnosis and Therapeutic Monitoring[M].Singapore:World Scientific,2005.75-84
