Turn-off transients in current-modulated multitransverse-mode vertical-cavity surface-emitting lasers

Valle, A.; Pesquera, L.
December 2001
Applied Physics Letters;12/10/2001, Vol. 79 Issue 24, p3914
Academic Journal
Turn-off transients in current-modulated weakly index-guided vertical-cavity surface-emitting lasers (VCSELs) are analyzed by using a model that takes into account all the transverse modes supported by the waveguide. The turn-off transients strength is maximum for the current at which the VCSEL enters the multitransverse-mode regime. Their strength significatively decreases for the multimode regime and then operation in several modes is beneficial to avoiding turn-off transients when modulating the VCSEL well above threshold in order to achieve a required modulation rate or a sufficient optical output power.


Related Articles

  • Picosecond optical response of Tl[sub 2]Ba[sub 2]CaCu[sub 2]O[sub 8] and.... Lai, Y.S.; Liu, Y.Q. // Applied Physics Letters;2/27/1995, Vol. 66 Issue 9, p1135 

    Investigates the optical response of several superconductor films activated by laser pulses. Dependence of optical response on temperature and laser intensity; Identification of fast and slow components; Presence of a 70 picosecond electric transient.

  • Compact laser-diode driver provides protection for precision-instrument use. Jiaqi Shen; Xiaoshu Cai // EDN Europe;May2008, Vol. 53 Issue 5, p60 

    The article offers information on how to protect continuous-wave laser diodes. It states that constant-current sources assist in handling the precision-instrument application of the laser diodes. It also mentions that the proper design of the diodes allows for their robustness and stability. It...

  • Stress generated in polyimide by excimer-laser irradiation. Zweig, A. D.; Venugopalan, V.; Deutsch, T. F. // Journal of Applied Physics;9/15/1993, Vol. 74 Issue 6, p4181 

    Presents a study which generated stress transients in polyimide by irradiation with excimer-laser pulses at radiant exposures. Duration and peak stress of transients; Factors attributed to the stresses observed; Ranges of radiant exposure within which different physical mechanisms govern the...

  • Synchronous breaker operation: New way to minimize transients.  // Electrical World;Feb96, Vol. 210 Issue 2, p30 

    Discusses new ways to reduce voltage and current transients generated during energization of shunt capacitor banks. Transients as an increasing problem for electric utilities; Operating consistency; Need for circuit breaker adapted for synchronous operation to have contacts that close at high...

  • SURGE SUPPRESSORS.  // Power Electronics Technology;Dec2011, Vol. 37 Issue 12, p33 

    A directory for companies which manufacture electric surge suppressors in the U.S. is presented.

  • Surge protection: Where and how much? Neri, Dion // EC&M Electrical Construction & Maintenance;Mar1997, Vol. 96 Issue 3, p58 

    Discusses the necessity for electric surge protection. Susceptibility of surges in the environment; Knowing the necessary level of surge protection; Parts of electronic equipments that help cause surges; Reasons for surges; External and internal surges; Surge protection testing.

  • Reducing electrical operation disturbances. Valvoda, Frank R.; Farrell, George W. // Consulting-Specifying Engineer;Oct97, Vol. 22 Issue 4, p78 

    Provides information on switching surges and assumed standard surge wave forms from which expected voltage and transient surges may be found. Examples of normal and abnormal switching transients; Types of switching surges; Requirements for transient-voltage surge suppression equipment. INSETS:...

  • Improved laser diode clamp circuit protects against overvoltages. Zannis, James // Electronics Weekly;6/18/2008 Supplement, Issue 2342, p13 

    The article focuses on the Junction Field Effect Transistors (JFET)-clamp circuit which minimizes the risk of damage in semiconductor laser diodes, caused due to less tolerance for fast voltage or current transients. When the negative supply rail comes up, the JFET turns off. This circuit is...

  • Experimental study of a positive surge. Part 2: comparison with literature theories and unsteady flow field analysis. Gualtieri, Carlo; Chanson, Hubert // Environmental Fluid Mechanics;Dec2011, Vol. 11 Issue 6, p641 

    A positive surge is a unsteady open channel flow resulting from the rapid rise of the free-surface. The phenomenon may be observed in water supply canals and channels as well as in some estuaries during spring tidal conditions. The formation and development of positive surges can be predicted...


Read the Article


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

Try another library?
Sign out of this library

Other Topics