·        G. Sun, K. Shahzad, J. Gaines, and J. Khurgin, “Room-temperature photopumped blue lasing in ZnSe/ZnS0.06Se0.94 double heterostructures,” Appl. Phys. Lett. 59, pp.310-311 (1991)

 

·        G. Sun and J. Khurgin, “Feasibility of optically pumped four-level infrared lasers,” in Intersubband Transitions in Quantum Wells, (Edited by E. Rosencher, B. Vinter, and B. Levine, Plenum Press, New York, 1992), pp.219-226

 

·        G. Sun and J, Khurgin, “Optically pumped four-level infrared laser based on intersubband transitions in multiple quantum wells: feasibility study,” IEEE J. Quantum Electron. QE-29, pp.1104-1111 (1993)

 

·        G. Sun, L. Friedman, and R. A. Soref, “Intersubband lasing lifetimes of SiGe/Si and GaAs/AlGaAs multiple quantum well structures,” Appl. Phys. Lett. 66, pp.3425-3427 (1995)

 

·        J. Khurgin, G. Sun, L. Friedman, and R. A. Soref, “Comparative analysis of optically-pumped intersubband lasers and intersubband Raman Oscillators,” J. Appl. Phys. 78, pp.7398-7400 (1995)

 

·        G. Sun and L. Friedman, “Heavy-hole scattering by confined nonpolar optical phonons in a single Si1- xGex/Si quantum well,”  Phys. Rev. B 53, pp.3966-3974 (1996)

 

·        L. Friedman, R. A. Soref, and G. Sun, “Quantum parallel laser: a unipolar superlattice intersubband laser,” IEEE Photonics Technology Letters 9, pp.593-595 (1997)

 

·        G. Sun, J. B. Khurgin, L. Friedman and R. A. Soref, “Tunable intersubband Raman laser in GaAs/AlGaAs multiple quantum wells,” J. Opt. Soc. Am. B 15, pp.648-651 (1998)

 

·        L. Friedman, R. A. Soref, and G. Sun, “Silicon-based interminiband infrared laser,” J. Appl. Phys. 83, pp.3480-3485 (1998)

 

·        G. Sun, Y. Lu, L. Friedman, and R. A. Soref, “Heavy-hole intersubband scattering by confined optical phonons in a Si/ZnS superlattice,” Phys. Rev. B 57, pp.6550-6560 (1998)

 

·        G. Sun, Y. Lu, and J. B. Khurgin, “Intersubband laser based on the subband dispersion of inverted mass,” the focus issue of Optics Express for Quantum Well Laser Design, 2, pp.143-150 (1998)

 

·        G. Sun, Y. Lu, and J. B. Khurgin, “Valence intersubband lasers with inverted light-hole effective mass,” Appl. Phys. Lett. 72, pp.1481-1483 (1998)

 

·        R. A. Soref, L. Friedman, L. C. Lew Yan Voon, L. R. Ram-Mohan, and G. Sun, “Progress toward silicon-based intersubband lasers,” J. Vac. Sci. Technol. B 16(3), pp.1525-1528 (1998)

 

·        L. Friedman, R. A. Soref, G. Sun, and Y. Lu, “Theory of the strain-symmetrized Si-based Ge/Si superlattice laser,” IEEE J. Selected Topics in Quantum Electron.4, pp.1029-1034 (1998)

 

·        L. Friedman, R. A. Soref, G. Sun, and Y. Lu, “Asymmetric strained-symmetrized Ge/Si interminiband laser,” IEEE Photonics Technology Letters 10, pp.1715-1717 (1998)

 

·        G. Sun, L. Friedman, and R. A. Soref, “Light-hole to heavy-hole acoustic phonon scattering rate,” Phys. Rev. B, 62, pp.8114-8119  (2000)

 

·        L. Friedman, G. Sun, and R. A. Soref, “SiGe/Si THz laser based on transitions between inverted mass light-hole and heavy-hole subbands,” Appl. Phys.  Lett. 78, pp.401-403 (2001)

 

·        G. Sun, R. A. Soref, and J. B. Khurgin, “Phonon-pumped terahertz inter-miniband laser,” IEEE J. Selected Topics in Quantum Electron. 7, pp.376-380 (2001)

 

·        G. Sun and Richard Soref, “Phonon–pumped terahertz gain in n-type GaAs/AlGaAs superlattice,” Appl. Phys.  Lett. 78, pp.3520-3522 (2001)

 

·        R. A. Soref and G. Sun, “Terahertz gain in SiGe/Si quantum staircase utilizing the heavy-hole inverted effective mass,” Appl. Phys.  Lett. 79, pp.3639-3641 (2001)

 

·        G. Sun, R. A. Soref, and Z. Ikonic, “Promising SiGe superlattice and quantum well laser candidates,” invited paper in Towards the First Silicon Laser (Edited by L. Pavesi et al., Kluwer Academic Publishers, Netherlands, 2003),  pp.293-306

 

·        G. Sun, R. A. Soref, and J. B. Khurgin, “Reduced threshold current of a quantum dot laser in short period superlattice of indirect-band gap,” Appl. Phys.  Lett. 84, pp.3861-3863 (2004)

 

·        G. Sun, R. A. Soref, and J. B. Khurgin, “The linewidth enhancement factor α in quantum dot lasers with a short period superlattice of indirect bandgap,” IEEE Photonics Technology Lett. 16, pp.2203-2205 (2004)

 

·        G. Sun, J. B. Khurgin, and R. A. Soref, “Nonlinear all-optical GaN/AlGaN multi-quantum-well devices for 100 Gb/s applications at l = 1.55 mm,” Appl. Phys.  Lett. 87, pp.201108-201110 (2005)

 

·        G. Sun, J. B. Khurgin, and R. A. Soref, “Design of a GaN/AlGaN intersubband Raman laser electrically tunable over the 3~5 μm atmospheric transmission window,” J. Appl. Phys. 99, p.33103 (2006)

 

·        S. C. Wang, R. A. Soref, and G. Sun “Fabrication and Characteristics of GaN/AlGaN multilayer structure for terahertz quantum cascade laser,” invited paper in Terahertz Physics, Devices, and Systems, edited by Mehdi Anwar, Anthony J. DeMaria, Michael S. Shur, Proc. of SPIE,  6373 (SPIE, Bellingham, WA, 2006) p.637309-1

 

·        G. S. Huang, T. C. Lu, H. H. Yao, H. C. Kuo, S. C. Wang, G. Sun, C.-W. Lin, L. Chang, R. A. Soref, “GaN/AlGaN active regions for terahertz quantum cascade lasers grown by low-temperature metal vapor deposition,” J. Crystal Growth 298, pp.687-690 (2007)

 

·        G. Sun, J. B. Khurgin, and R. A. Soref, “Practicable enhancement of spontaneous emission using surface plasmons,” Appl. Phys.  Lett. 90, p.111107 (2007)

 

·        J. B. Khurgin, G. Sun, and R. A. Soref, “Enhancement of luminescence efficiency using surface plasmon polaritons: figures of merit,”  J. Opt. Soc. Am. B 24, pp.1968-1980 (2007)

 

·        G. Sun, H. H. Cheng, J. Menendez, J. B. Khurgin, and R. A. Soref, “Strain-free Ge/GeSiSn quantum cascade lasers based on L-valley intersubband transitions,” Appl. Phys.  Lett. 90, p.251105 (2007)

 

·        K. Y. Wang, W. P. Huang, H. H. Cheng, G. Sun, R. A. Soref, and Y. W. Suen “Observation of type-I and type-II excitons in strained Si/SiGe quantum-well structures,” Appl. Phys.  Lett. 91, p.072108 (2007)

 

·        J. B. Khurgin and G. Sun,"Limits of luminescence efficiency enhancement by surface plasmon polaritons," invited paper in Photonic Metamaterials, edited by Mikhail A. Noginov, Nikolay I. Zheludev, Allan D. Boardman, Nader Engheta, Proc. of SPIE 6638 (SPIE, Bellingham, WA, 2007) p.66380R

 

·        W. P. Huang, H. H. Cheng, G. Sun, R. F. Lou, J. H. Yeh, and T. M. Shen, “The characteristic of strain relaxation on SiGe virtual substrate with thermal annealing,” Appl. Phys.  Lett. 91, p.142102 (2007)