Results 21 to 30 of about 2,541,468 (293)
Long wavelength VCSEL-by-VCSEL optical injection-Locking [PDF]
, 2009 VCSEL-by-VCSEL optical injection-locking to obtain high cut-off frequencies of 1.3 μm Vertical-Cavity Surface-Emitting Lasers (VCSELs) is demonstrated. A detailed physical explanation of the underlying mechanism is presented.
Sirbu, A. +13 more
core +1 more source
Investigation of spectrally broad gain multiple-width quantum well material for colliding pulse mode-locked operation [PDF]
, 2004 The first colliding pulse mode-locked operation of devices fabricated from broad gain spectrum multiple-width quantum well material is reported. Using multiple-width quantum wells in the active region of the InGaAs/InAlGaAs material system, 35% broader ...
McDougall, S.D. +3 more
core +2 more sources
A millimetre wave phase shifter using a 40GHz hybrid mode locked laser [PDF]
, 2008 In this paper, electrical injection locking of a modelocked laser is used to create a millimetre wave phase shifter. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems.
Martin J. Cryan +3 more
core +1 more source
A new method for the determination of the locking range of oscillators [PDF]
, 2007 A time-domain method for the determination of the injection-locking range of oscillators is presented. The method involves three time dimensions: the first and the second are warped time scales used for the free-running frequency and the external ...
Condon, Marissa +5 more
core +2 more sources
Ultrashort-pulse generation from quantum-dot semiconductor diode lasers [PDF]
, 2008 In this thesis, novel regimes of mode locking in quantum dot semiconductor laser diodes have been investigated by exploiting the unique features offered by quantum dots.
Cataluna, Maria Ana
core +2 more sources
Harmonically mode-locked Yb:CALGO laser oscillator
Optics Express, 2017 We present a passively mode-locked Yb:CALGO oscillator with harmonic repetition rate operation up to the third order. It is operated in the solitary regime with a fundamental roundtrip rate of 94 MHz and pulse durations between 200 fs and 600 fs. Harmonic operation was observed being stable for several days.
Bensch, Hauke M. +3 more
openaire +3 more sources
Low-Threshold, Multiple High-Order Harmonics Fiber Laser Employing Cr2Si2Te6 Saturable Absorber
Nanomaterials, 2023 Abundant research findings have proved the value of two-dimensional (2D) materials in the study of nonlinear optics in fiber lasers. However, there remains two problems: how to reduce the start-up threshold, and how to improve the damage threshold, of ...
Nannan Xu +6 more
doaj +1 more source
Study of millimeter wave phase shift in 40 GHz hybrid mode locked lasers [PDF]
, 2009 An investigation into using hybrid mode-locked lasers to implement millimeter wave phase shift is presented. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems.
Cryan, MJ, Khawaja, BAM
core +1 more source
Active mode-locking via pump modulation in a Tm-doped fiber laser
APL Photonics, 2016 We propose and experimentally realize a new class of actively mode-locking technique using pump modulation for rare-earth doped fiber lasers. A Tm-doped fiber laser at 2 μm is mode-locked using the proposed active mode-locking via pump modulation ...
Yu Wang, Sze Y. Set, Shinji Yamashita
doaj +1 more source
Photonics, 2015 We reported that the photonic crystal fiber (PCF) filled with TI:Bi2Te3 nanosheets solution could act as an effective saturable absorber (SA). Employing this TI-PCF SA device; we constructed an ytterbium-doped all-fiber laser oscillator and achieved the
Yu-Shan Chen +4 more
doaj +1 more source