Efficient side lobe suppression of laser diode arrays

Leger, James R.; Swanson, Gary J.; Holz, Michael
April 1987
Applied Physics Letters;4/20/1987, Vol. 50 Issue 16, p1044
Academic Journal
An optical technique is described which converts multilobed far-field patterns from in-phase laser arrays into a single-lobed pattern. The technique redistributes the output light from the laser array to produce a uniformly illuminated aperture. This filled aperture produces negligible side lobes, and efficiently channels the array power into the main lobe. Experiments performed on a ten-element Y-guide laser array show an increase in main lobe power from 51 to 90% of the total array power.


Related Articles

  • Photoassisted poling induced second harmonic generation with in-plane anisotropy in azobenzene containing polymer films. Jiang, X. L.; Li, L.; Kumar, J.; Tripathy, S. K. // Applied Physics Letters;12/9/1996, Vol. 69 Issue 24, p3629 

    Photoassisted poling of azobenzene containing polymer films at room temperature using polarized Ar+ laser beam as pump light was studied. Irradiating the films with p-polarized pump light at an incident angle to the normal during the poling process, second harmonic generation with in-plane...

  • THz-dual-frequency Yb3+: KGd(WO4)2 laser for continuous wave THz generation through photomixing. Czarny, R.; Alouini, M.; Larat, C.; Krakowski, M.; Dolfi, D. // Electronics Letters;7/22/2004, Vol. 40 Issue 15, p942 

    A diode-pumped KGd(WO4)2 Yb3+ doped laser has been developed for CW-THz generation. The frequency difference between the two modes is step tunable from DC to 3.1 THz. A maximum total optical output power of 120 mW CW has been obtained with a beat note linewidth narrower than 30 kHz.

  • The effects of the electric field associated with a laser-induced pulsed discharge on the ablation-generated plumes of YBa2Cu3O7-X. Fried, Daniel; Kushida, Toshimoto; Reck, Gene P.; Rothe, Erhard W. // Journal of Applied Physics;8/1/1992, Vol. 72 Issue 3, p1113 

    Presents a study that investigated the effects of a pulsed discharge on the luminous plume generated during excimer laser ablation of yttrium-barium-copper-oxygen in an oxygen environment. Use of high-voltage capacitor discharge circuit; Information on pulsed laser deposition; Advantages of...

  • Laser driver for 2.7Gbit/s comms.  // Electronics Weekly;5/25/2005, Issue 2195, p30 

    This article reports that Micrel Inc. has a 2.7Gbit/s laser driver for FP/DFB lasers. The SY88982 offers 2.4V minimum laser compliance voltage for high-current DC-coupled applications for metro area networking, local area networking and storage area networking telecom and datacom markets. The...

  • Analysis of temporal jitter in a copper vapor laser system. Kumar, D. Durga Praveen; Gantayet, L. M.; Singh, Sunita; Rawat, A. S.; Rana, Paramjit; V, Rajasree; Agarwalla, Sandeep K.; Chakravarthy, D. P. // Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p025105 

    Temporal jitter in a magnetic pulse compression based copper vapor laser (CVL) system is analyzed by considering ripple present in the input dc power supply and ripple present in the magnetic core resetting power supply. It is shown that the jitter is a function of the ratio of operating voltage...

  • Efficient discharge pumping of a copper vapor laser using a cylindrical grid electrode. Ohzu, Akira; Kato, Masaaki; Maruyama, Yoichiro // Review of Scientific Instruments;Jun2000, Vol. 71 Issue 6 

    Experimental investigation of laser output characteristics of an elemental copper vapor laser using a cylindrical grid electrode has been carried out. The grid electrode, which is placed at the inside of a cathode and separated 2 cm away from a cathode, is used for increasing the output power by...

  • Fast and economic signal processing technique of laser diode self-mixing interferometry for nanoparticle size measurement. Wang, Huarui; Shen, Jianqi // Applied Physics B: Lasers & Optics;May2014, Vol. 115 Issue 2, p285 

    The size of nanoparticles is measured by laser diode self-mixing interferometry, which employs a sensitive, compact, and simple optical setup. However, the signal processing of the interferometry is slow or expensive. In this article, a fast and economic signal processing technique is...

  • Self-starting photonic clock using semiconductor optical amplifier based Mach-Zehnder interferometer. Chan, A. W. L.; Lee, K. L.; Shu, C. // Electronics Letters;6/24/2004, Vol. 40 Issue 13, p827 

    A novel self-starting photonic clock device is proposed. The device generates photonic clock signals passively by utilizing cross-phase modulation in a DC biased semiconductor optical amplifier based Mach-Zehnder interferometer (SOA-MZI) with optical feedback loop(s) and a continuous-wave laser...

  • NO and NO2 production in pulsed low pressure dc discharge. Rousseau, Antoine; Gatilova, Lina V.; Röpcke, Jürgen; Meshchanov, Alexander V.; Ionikh, Yury Z. // Applied Physics Letters;5/23/2005, Vol. 86 Issue 21, p211501 

    Simultaneous measurements of both NO and NO2 are performed downstream a pulsed low pressure dc discharge in flowing air using tunable diode laser absorption spectroscopy in the infrared region. Pulse duration and repetition rate range from 20 μs to 5 ms and from 50 to 1000 Hz, respectively....


Read the Article


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

Try another library?
Sign out of this library

Other Topics