Theory of gain and mode locking in free-running class-B lasers with simultaneous oscillation of three longitudinal modes

Jahanpanah, J.; Rahdar, A A

doi:10.1016/j.optlastec.2012.03.013

Cited by 10 publications

(15 citation statements)

References 25 publications

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“…The mode-locking features of a three-mode class-B laser are generalized from the simple case γ R = γ L = γ C (ε = 0) [29] to the much complicated symmetrical case…”

Section: Discussionmentioning

confidence: 99%

“…(4.5) in Ref. [29] for the simple case ε = 0. The frequency shift of central mode δ C is evidently zero for the unsymmetrical frequency shifts (15) and ( 16) according to the mode-locking condition (6).…”

Section: Formation Mechanism Of Bifurcationsmentioning

confidence: 92%

“…For the simpler case δ R = −δ L , one derives the following solutions that are the same as solutions (5.7) and (5.8) in Ref. [29]:…”

Section: Formation Mechanism Of Bifurcationsmentioning

confidence: 97%

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Formation mechanism of bifurcation in mode-locked class-B laser

Jahanpanah¹,

Rezazadeh²,

Rahdar³

2014

Chinese Phys. B

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The random oscillations of many longitudinal modes are inevitable in both class -A and -B lasers due to their broadened atomic bandwidths. The destructive superposition of electric field components that are incoherently oscillating at the different longitudinal modes can be converted into a constructive one by using the mode-locking technique. Here, the Maxwell-Bloch equations of motion are solved for a three-mode class-B laser under the mode-locking conditions. The results indicate that the cavity oscillating modes are shifted by changing the laser pumping rate. On the other hand, the frequency components of cavity electric field simultaneously form the various bifurcations. These bifurcations satisfy the well-known mode-locking conditions as well. The atomic population inversion forms only one bifurcation, which is responsible for shaping the cavity electric field bifurcations.

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“…The mode-locking features of a three-mode class-B laser are generalized from the simple case γ R = γ L = γ C (ε = 0) [29] to the much complicated symmetrical case…”

Section: Discussionmentioning

confidence: 99%

Section: Formation Mechanism Of Bifurcationsmentioning

confidence: 92%

See 1 more Smart Citation

Formation mechanism of bifurcation in mode-locked class-B laser

Jahanpanah¹,

Rezazadeh²,

Rahdar³

2014

Chinese Phys. B

Self Cite

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“…in which D 0 is the second-order modulation in the static population inversion of a free-running single-mode laser D 0 [10,12,18], D − = D * + and D 2− = D * 2+ are the first-and second-order pulsations in the atomic population inversion due to the presence of the satellite lines.…”

Section: Laser Amplifier Structurementioning

confidence: 99%

“…The relation (15) indicates that the phase of the input signal remains unchanged during its interaction with the laser. The phase beating conditions ( 16) and ( 17) are identical to the mode-locking conditions of the central and adjacent modes in the multimode free-running class B lasers [18]. We will use ( 15)-( 17) to calculate the train of pulses produced by the phase-locking of satellite lines in section 5.…”

Section: Motion Equations Of the Satellite Linesmentioning

confidence: 99%

Four-wave mixing and generation of short pulses in multimode class B laser amplifiers

Jahanpanah

Moradi

2013

J. Phys. B: At. Mol. Opt. Phys.

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The linear and nonlinear amplification features of an optical signal by a multimode class B laser have been discussed. The four-wave mixing process between the cavity central mode and the amplified input signal produces a sequence of satellite lines. It is demonstrated that short pulses can be formed by phase beating the satellite lines. In the linear regime, the laser amplifier acts like a three-mode free-running laser where the oscillations of two right and left adjacent modes are substituted by those of the amplified input signal and its image satellite line. In the nonlinear regime, two more symmetrical adjacent satellite lines are first added to the cavity electric field components and then the frequency of the cavity central mode is shifted towards the image satellite lines. At the same time, the number of central-mode photons is gradually decreased by raising the input signal strength. The central-mode photons are ultimately reduced to zero, where an injection-locking phenomenon takes place. Finally, we derive a heuristic conservation relation between the input energies to the laser by sum of the pumping and injected signals, and those distributed between the signal and image satellite lines and spontaneous emission radiation.

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The distribution mechanism of noise fluxes between three oscillating modes of a free-running class-A laser

Khalilzadeh

Jahanpanah

2016

Appl. Phys. B

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Theory of gain and mode locking in free-running class-B lasers with simultaneous oscillation of three longitudinal modes

Cited by 10 publications

References 25 publications

Formation mechanism of bifurcation in mode-locked class-B laser

Formation mechanism of bifurcation in mode-locked class-B laser

Four-wave mixing and generation of short pulses in multimode class B laser amplifiers

The distribution mechanism of noise fluxes between three oscillating modes of a free-running class-A laser

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