Spectral and picosecond temporal properties of flared guide Y-coupled phase-locked laser arrays

DeFreez, R. K.; Bossert, D. J.; Yu, N.; Hartnett, K.; Elliott, R. A.; Winful, H. G.
December 1988
Applied Physics Letters;12/12/1988, Vol. 53 Issue 24, p2380
Academic Journal
Spatio-spectral and spatio-temporal properties of flared waveguide ‘‘Y’’-coupled laser arrays are investigated in both cw and pulsed operation. In each case, regular sustained self-pulsations are exhibited. Destabilization of phase locking, caused by amplitude phase coupling, is thought to be the origin of the pulsations.


Related Articles

  • Estimation of the spontaneous emission factor for microdisk lasers via the approximation of whispering gallery modes. Chin, Mee Koy; Chu, Daniel Y.; Ho, Seng-Tiong // Journal of Applied Physics;4/1/1994, Vol. 75 Issue 7, p3302 

    Presents a study that developed an approximate method for solving the whispering gallery modes in a microdisk laser. Schematic diagram of a cylindrical waveguide and a disk structure; Details on the threshold current of the laser; Method of calculation; Factors considered in solving the...

  • Low-threshold terahertz quantum-cascade lasers. Rochat, Michel; Ajili, Lassaad; Willenberg, Harald; Faist, Je´ro⁁me; Beere, Harvey; Davies, Giles; Linfield, Edmund; Ritchie, David // Applied Physics Letters;8/19/2002, Vol. 81 Issue 8, p1381 

    A quantum-cascade laser operating at λ = 66 µm is demonstrated. It consists of a three-quantum-well chirped-superlattice active region embedded in a waveguide based on a single interface plasmon and a buried contact. A threshold current density of 210 A/cm² at T = 12 K, a maximum peak...

  • Very low loss channel waveguides in polymethylmethacrylate. Mukherjee, Anadi; Eapen, Ben Joy // Applied Physics Letters;12/19/1994, Vol. 65 Issue 25, p3179 

    Presents an ultraviolet laser fabrication technique that allows minimum surface scattering loss in channel waveguide processing on polymethylmethacrylate. Role of bulk scattering in polymeric waveguides; Attainment of the desired target of linear propagation loss; Qualitative explanation for...

  • Laser emission in Nd:YVO4 channel waveguides at 1064 nm. Sánchez-Morales, M. E.; Vázquez, G. V.; Mejía, E. B.; Márquez, H.; Rickards, J.; Trejo-Luna, R. // Applied Physics B: Lasers & Optics;Feb2009, Vol. 94 Issue 2, p215 

    In this work, we report 1064 nm laser emission in Nd:YVO4 channel waveguides fabricated by carbon implantation. Typical threshold pump powers (∼808 nm) were ≥45 mW. Maximum conversion efficiency was 11.5% (29.6% slope efficiency), and up to 9 mW of signal was delivered. Sample lengths...

  • Nd:Ta2O5 rib waveguide lasers. Unal, Bayram; Tai, Chao-Yi; Shepherd, David P.; Wilkinson, James S.; Perney, Nicolas M. B.; Netti, M. Caterina; Parker, Gregory J. // Applied Physics Letters;1/10/2005, Vol. 86 Issue 2, p021110 

    Ta2O5 waveguides offer great potential for high-density active photonic crystal circuits and their combination with rare-earth dopants for active devices is of interest for increasing their potential functionality. To this end, neodymium-doped Ta2O5 rib waveguide lasers have been fabricated on...

  • Studying the characteristics of pulse-pumped semiconductor 1060-nm lasers based on asymmetric heterostructures with ultrathick waveguides. Vinokurov, D. A.; Kapitonov, V. A.; Lyutetskiĭ, A. V.; Nikolaev, D. N.; Pikhtin, N. A.; Rozhkov, A. V.; Rudova, N. A.; Slipchenko, S. O.; Stankevich, A. L.; Fetisova, N. V.; Khomylev, M. A.; Shamakhov, V. V.; Borshchev, K. S.; Tarasov, I. S. // Technical Physics Letters;Aug2006, Vol. 32 Issue 8, p712 

    High-power semiconductor lasers based on asymmetric quantum-dimensional separate confinement InGaAs/GaAs heterostructures with ultrathick waveguides were fabricated by means of metalorganic hydride vapor phase epitaxy technology. The laser characteristics were studied in a pulsed pumping regime,...

  • Properties of leaky and degenerate modes in a prism–film coupler with waveguide structure. Zhang, Xi-Jing; Fan, Xi-Zhi; Yan, Jun; Xu, Fei; Lou, Xiao-Yuan; He, Jing-Liang; Wang, Zhen-Lin; Wang, Hui-Tian; Ming, N. B. // Journal of Applied Physics;12/1/2003, Vol. 94 Issue 11, p7025 

    A laser beam can be efficiently fed into a planar thin film by means of a prism–film coupler. The properties of the cavity modes, the coupling efficiency, the optimum coupling condition, etc. of the prism–film coupler can be explained using the theory developed by Tien and Ulrich...

  • Dispersive gain and loss in midinfrared quantum cascade laser. Revin, D. G.; Soulby, M. R.; Cockburn, J. W.; Yang, Q.; Manz, C.; Wagner, J. // Applied Physics Letters;2/25/2008, Vol. 92 Issue 8, p081110 

    We report the measurements of dispersive gain (simultaneous coexistence of gain and losses on a single intersubband transition) in a quantum cascade laser. Broadband transmission spectra through the waveguide of a λ∼4.7 μm In0.53Ga0.47As/AlAs0.56Sb0.44/InP quantum cascade laser have...

  • Raman gain from waveguides inscribed in KGd(WO4)2 by high repetition rate femtosecond laser. Eaton, S. M.; Merchant, C. A.; Iyer, R.; Zilkie, A. J.; Helmy, A. S.; Aitchison, J. S.; Herman, P. R.; Kraemer, D.; Miller, R. J. D.; Hnatovsky, C.; Taylor, R. S. // Applied Physics Letters;2/25/2008, Vol. 92 Issue 8, p081105 

    We report the formation of waveguides in Raman-active KGd(WO4)2 with a focused, high repetition rate femtosecond laser. Parallel guiding regions, formed to either side of the laser-induced damage track, supported TE and TM modes that coupled efficiently to optical fiber at telecom wavelengths....


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics