Parametric excitation of light in the picosecond rang

Danelyus, R; Dikchyus, G A; Kabelka, V; Piskarskas, A.; Stabinis, A.; Yasevichyute, Ya

doi:10.1070/qe1977v007n11abeh004126

Cited by 40 publications

(2 citation statements)

References 5 publications

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“…Frequency-tunable picosecond light pulses may be generated in mode-locked dye laser oscillators [1][2][3], in distributed feedback dye lasers [4], in dye laser generators [5][6][7][8][9][10] and in parametric generators [11][12][13]. Pulsed dye laser amplifiers [14][15][16] and parametric amplifiers [11,12] are used to raise the laser signals to high power levels.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical investigation of tunable picosecond pulse generation in longitudinally pumped dye laser generators and amplifiers

et al. 1988

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Picosecond pulse generation in longitudinally pumped dye laser generators and amplifiers is studied experimentally and theoretically. Frequency-tunable pulses between 720 and 940 nm are generated with a picosecond ruby laser pump source. The amplification of spontaneous emission and of seeding pulses in the generator and amplifier cells is investigated. Stimulated emission cross-sections and excited-state absorption cross-sections are determined by computer simulations. The coherence properties of the generated radiation are analysed. Resonance Raman contributions are resolved.

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Section: Introductionmentioning

confidence: 99%

Experimental and theoretical investigation of tunable picosecond pulse generation in longitudinally pumped dye laser generators and amplifiers

et al. 1988

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“…In such a system, it is the nonlinear polarization rotation and its relative relation to the passive polarizer which determines the intensity selection mechanism for generating the mode-locking behavior 14,15 Thus the solitons which experience maximal gain are those that after every round trip are aligned in-phase with the pump field of the PSA. This specific soliton is characterized by a particular value of the parameter η in (2) since it controls the phase-rotation rate (3). Solitons with η above or below this particular value experience a net attenuation in the cavity due due to their mis-alignment in phase with the pump.…”

Section: Principle Of Operationmentioning

confidence: 99%

Mode-locking with phase-sensitive (parametric) amplification

Hachey

Jones

Kutz

2010

Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IX

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A new method is proposed and considered theoretically for using phase-sensitive amplification as the intensitydiscrimination (saturable absorption) element in a laser cavity to generate stable and robust mode-locking. The phase-sensitive amplifier acts as a phase-filter for selecting the specific intensity dependent phase-rotation of the mode-locked pulse that locks the phase to the amplifier pump phase. The nonlinear phase-rotation is analogous to the nonlinear polarization rotation which is used with passive polarizers for mode-locking. It is demonstrated that the phase-sensitive amplification mechanism can indeed result in stable mode-locking. An average cavity model explicitly calculates the stability of the mode-locked pulses. Keywords: Mode-locked lasers, parametric amplifiers, solitonsMode-locked lasers have been developed in a wide variety of cavity configurations. 1 The fundamental physical mechanism responsible for generating stable mode-locked pulse streams, i.e. saturable absorption, polarization rotation, nonlinear interferometry, active modulation, or nonlinear mode-coupling, can be significantly different in the various cavity configurations. Common to each mode-locked laser, however, is the intensity discrimination which is achieved by the mode-locking mechanism. The intensity discrimination preferentially attenuates lowintensity portions of a pulse with respect to higher intensity portions. When combined with the laser cavity saturable gain, chromatic dispersion and self-phase modulation, stable mode-locking operation may be achieved. In this manuscript, we propose a novel method for achieving the required intensity discrimination in the cavity. Specifically, we show that the intensity-dependent phase rotation in the laser cavity in combination with phasesensititive amplification, which acts as a phase filter, can generate and support stable mode-locked pulses. The resulting mode-locked solutions are soliton-like pulses that are locked in phase to the pump phase of the phasesensitive amplifier. The amplifier, via the pump phase, thus acts to provide both the intensity-discrimination required of mode-locked in conjunction with a stabilization mechanism for the generated soliton-like pulses.Three effects are critical in the mode-locking process. First is the equilibration of energy in the laser which is provided by the saturating cavity gain (e.g. erbium-doped amplifiers). Second is the intensity discrimination which must occur in order for the cavity energy to begin pulse formation or localization. And finally, the onset of pulse formation ultimately leads to soliton generation as a result of the balance of the cavity chromatic dispersion and self-phase modulation. 1 These three physical processes are common to mode-locked lasers operating in the anomalous dispersion regime. The effect which changes most from one mode-locked laser to the next is the mechanism responsible for the intensity discrimination. The laser cavity configurations listed above have a variety of different physical mechanisms p...

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4.1 Frequency conversion in crystals

Gurzadyan¹

2005

Laser Fundamentals

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Parametric excitation of light in the picosecond rang

Cited by 40 publications

References 5 publications

Experimental and theoretical investigation of tunable picosecond pulse generation in longitudinally pumped dye laser generators and amplifiers

Experimental and theoretical investigation of tunable picosecond pulse generation in longitudinally pumped dye laser generators and amplifiers

Mode-locking with phase-sensitive (parametric) amplification

4.1 Frequency conversion in crystals

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