Area theorem in a ring laser cavity

Пахомов, А. В.; Архипов, М. В.; Rosanov, N. N.; Архипов, Р. М.

doi:10.1103/physreva.108.023506

Cited by 4 publications

(3 citation statements)

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“…In Ref. [66,79] the classical area theorem was generalized to the coherent pulse propagation in a ring laser cavity. This generalized area theorem describes coherent pulse propagation through a resonant two-level medium with a strongly inhomogeneous line broadening placed inside a ring cavity.…”

Section: Analytical Consideration With the Area Theoremmentioning

confidence: 99%

“…However, in a recently published articles [64,65] the PML of a THz QCL was realized, avoiding the limitations above. Hence, in this work we focus only on CML regime, as it is not theoretically limited, implying the pulse minimal duration larger than T 2 [66,67], and potentially shorter pulses can be generated than in incoherent PML case. In addition, conventional mode-locked laser models often neglect coherent effects [1,[68][69][70][71][72][73].…”

Section: Introductionmentioning

confidence: 99%

“…The polarization of the medium is thus eliminated from the model. However, the inclusion of coherent effects is necessary for the transfer to more compact laser pulse sources and shorter pulses [66,67]. In such systems, mode locking relies on SIT rather than incoherent absorption saturation [54,55].…”

Section: Introductionmentioning

confidence: 99%

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Coherent mode locking in a two-section laser with fast gain and absorber

Arkhipov,

Diachkova,

Pakhomov

et al. 2024

Preprint

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Coherent mode locking is based on the formation of 2π pulses of self-induced transparency in the absorbing medium and π pulses in the amplifying medium. In this regime it becomes possible to generate ultrashort laser pulses down to one oscillation cycle with a pulse duration being much shorter than the polarization relaxation time T2 of the amplifying and absorbing medium. In this article a two-section laser model with a ring resonator based on absorbing and amplifying medium with short relaxation times has been applied. We have demonstrated a self-starting regime of coherent mode locking with picosecond and femtosecond laser pulses using numerical simulations for the given model. In addition, we have shown that there is a significant influence of generation frequency detuning on laser pulse duration and intensity. Moreover, we have compared our numerical results with an analytical model of a coherent mode-locked laser based on the area theorem. We believe that the findings of this work can open a pathway towards the practical application of mode locking in mid-IR and THz quantum cascade lasers.

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Section: Analytical Consideration With the Area Theoremmentioning

confidence: 99%