Dispersionless saturable absorber mirrors with large modulation depths and low saturation fluences

M. P. Lumb, P. N. Stavrinou, E. M. Clarke, R. Murray, C. G. Leburn, C. Jappy, Nikolaus Klaus Metzger, C. T. A. Brown, W. Sibbett

Research output: Contribution to journalArticle

Abstract

We show that it is possible to eliminate group delay dispersion over wide bandwidths in low-finesse, resonant saturable absorber mirrors, whilst maintaining a low saturation fluence and a high modulation depth. By modelling the mirror structure we demonstrate that these properties can be produced by capping a resonant device with a single dielectric layer of carefully selected refractive index. We show that a specially capped dispersionless structure minimises the temporal broadening of femtosecond pulses reflected from the mirror. We compare this device against uncapped-resonant and anti-resonant structures. The superior performance of the capped, dispersionless device was verified experimentally by comparing resonant, anti-resonant and dispersionless quantum-dot (QD) saturable absorber mirrors incorporated into a Cr(4+):forsterite laser system. We found that a minimum pulse duration of 86 fs could be achieved for the dispersionless structure at 1290 nm with an output power of 55 mW compared to 122 fs in an anti-resonant structure and several-picosecond pulses for a resonant structure.

Original languageEnglish
Pages (from-to)53-60
Number of pages8
JournalApplied Physics B: Lasers and Optics
Volume97
Issue number1
DOIs
Publication statusPublished - Sep 2009

Keywords

  • SESAMs
  • dielectric mirrors
  • passive-mode locking
  • femtosecond
  • solid state lasers
  • reflection
  • forsterite laser
  • ultrafast lasers

Cite this

Lumb, M. P., Stavrinou, P. N., Clarke, E. M., Murray, R., Leburn, C. G., Jappy, C., ... Sibbett, W. (2009). Dispersionless saturable absorber mirrors with large modulation depths and low saturation fluences. Applied Physics B: Lasers and Optics, 97(1), 53-60. https://doi.org/10.1007/s00340-009-3531-y
Lumb, M. P. ; Stavrinou, P. N. ; Clarke, E. M. ; Murray, R. ; Leburn, C. G. ; Jappy, C. ; Metzger, Nikolaus Klaus ; Brown, C. T. A. ; Sibbett, W. / Dispersionless saturable absorber mirrors with large modulation depths and low saturation fluences. In: Applied Physics B: Lasers and Optics. 2009 ; Vol. 97, No. 1. pp. 53-60.
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abstract = "We show that it is possible to eliminate group delay dispersion over wide bandwidths in low-finesse, resonant saturable absorber mirrors, whilst maintaining a low saturation fluence and a high modulation depth. By modelling the mirror structure we demonstrate that these properties can be produced by capping a resonant device with a single dielectric layer of carefully selected refractive index. We show that a specially capped dispersionless structure minimises the temporal broadening of femtosecond pulses reflected from the mirror. We compare this device against uncapped-resonant and anti-resonant structures. The superior performance of the capped, dispersionless device was verified experimentally by comparing resonant, anti-resonant and dispersionless quantum-dot (QD) saturable absorber mirrors incorporated into a Cr(4+):forsterite laser system. We found that a minimum pulse duration of 86 fs could be achieved for the dispersionless structure at 1290 nm with an output power of 55 mW compared to 122 fs in an anti-resonant structure and several-picosecond pulses for a resonant structure.",
keywords = "SESAMs, dielectric mirrors, passive-mode locking, femtosecond, solid state lasers, reflection, forsterite laser, ultrafast lasers",
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Lumb, MP, Stavrinou, PN, Clarke, EM, Murray, R, Leburn, CG, Jappy, C, Metzger, NK, Brown, CTA & Sibbett, W 2009, 'Dispersionless saturable absorber mirrors with large modulation depths and low saturation fluences', Applied Physics B: Lasers and Optics, vol. 97, no. 1, pp. 53-60. https://doi.org/10.1007/s00340-009-3531-y

Dispersionless saturable absorber mirrors with large modulation depths and low saturation fluences. / Lumb, M. P.; Stavrinou, P. N.; Clarke, E. M.; Murray, R.; Leburn, C. G.; Jappy, C.; Metzger, Nikolaus Klaus; Brown, C. T. A.; Sibbett, W.

In: Applied Physics B: Lasers and Optics, Vol. 97, No. 1, 09.2009, p. 53-60.

Research output: Contribution to journalArticle

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T1 - Dispersionless saturable absorber mirrors with large modulation depths and low saturation fluences

AU - Lumb, M. P.

AU - Stavrinou, P. N.

AU - Clarke, E. M.

AU - Murray, R.

AU - Leburn, C. G.

AU - Jappy, C.

AU - Metzger, Nikolaus Klaus

AU - Brown, C. T. A.

AU - Sibbett, W.

PY - 2009/9

Y1 - 2009/9

N2 - We show that it is possible to eliminate group delay dispersion over wide bandwidths in low-finesse, resonant saturable absorber mirrors, whilst maintaining a low saturation fluence and a high modulation depth. By modelling the mirror structure we demonstrate that these properties can be produced by capping a resonant device with a single dielectric layer of carefully selected refractive index. We show that a specially capped dispersionless structure minimises the temporal broadening of femtosecond pulses reflected from the mirror. We compare this device against uncapped-resonant and anti-resonant structures. The superior performance of the capped, dispersionless device was verified experimentally by comparing resonant, anti-resonant and dispersionless quantum-dot (QD) saturable absorber mirrors incorporated into a Cr(4+):forsterite laser system. We found that a minimum pulse duration of 86 fs could be achieved for the dispersionless structure at 1290 nm with an output power of 55 mW compared to 122 fs in an anti-resonant structure and several-picosecond pulses for a resonant structure.

AB - We show that it is possible to eliminate group delay dispersion over wide bandwidths in low-finesse, resonant saturable absorber mirrors, whilst maintaining a low saturation fluence and a high modulation depth. By modelling the mirror structure we demonstrate that these properties can be produced by capping a resonant device with a single dielectric layer of carefully selected refractive index. We show that a specially capped dispersionless structure minimises the temporal broadening of femtosecond pulses reflected from the mirror. We compare this device against uncapped-resonant and anti-resonant structures. The superior performance of the capped, dispersionless device was verified experimentally by comparing resonant, anti-resonant and dispersionless quantum-dot (QD) saturable absorber mirrors incorporated into a Cr(4+):forsterite laser system. We found that a minimum pulse duration of 86 fs could be achieved for the dispersionless structure at 1290 nm with an output power of 55 mW compared to 122 fs in an anti-resonant structure and several-picosecond pulses for a resonant structure.

KW - SESAMs

KW - dielectric mirrors

KW - passive-mode locking

KW - femtosecond

KW - solid state lasers

KW - reflection

KW - forsterite laser

KW - ultrafast lasers

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DO - 10.1007/s00340-009-3531-y

M3 - Article

VL - 97

SP - 53

EP - 60

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

SN - 0946-2171

IS - 1

ER -