Femtosecond pulse generation in a linear passive mode-locked dye laser

Bäumler, Wolfgang; Penzkofer, Alfons

doi:10.1007/bf00619406

Cited by 13 publications

(17 citation statements)

References 78 publications

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“…(iii) In both regimes (two or four pulses per round trip) the colliding pulse effect is expected to take place only once per round trip since the absorber was positioned only approximately in the cavity centre and the exact position for colliding pulse mode-locking in each absorber passage has not been searched [19].…”

Section: Optics Communications 1 January 1993mentioning

confidence: 99%

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Femtosecond pulse generation around 650 nm in a passive mode-locked Kiton Red dye laser

Petrov

Wittmann

Bäumler

et al. 1993

Optics Communications

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Sub 100 fs light pulses have been generated in the spectral region between 640 and 660 nm (the shortest duration being 50 fs at 653 nm) by passive mode-locking of a Kiton Red dye laser with the saturable absorber DQTCI.Nearly the whole visible and near infrared range (with some gaps) has been covered by various amplifying dye-saturable absorber combinations yielding femtosecond light pulses in cw passive or hybrid mode locked lasers [1][2][3][4]. Pulse durations below 150 fs were obtained in some of these combinations by group velocity dispersion balanced laser operation [5].In the spectral region around 650 nm sub 100 fs pulse generation has not been reported so far. The longest wavelength achieved by passive mode-locking of a Rhodamine 6G laser was 640 nm [ 6 ]. In this laser 50 fs pulses at 640 nm have been generated by the saturable absorber TCETI. Energy transfer passive mode-locking with an argon ion pump laser has been applied to cover the 652-694 nm region with Rhodamine 6G+Sulforhodamine 101 mixtures as gain medium and DQTCI or DCCI as saturable absorbers [ 7,8 ]. The shortest pulse durations obtained were 58 fs at 685 nm [8] and 120 fs at 666 nm [7]. Applying hybridly mode-locked systems pumped by the second harmonic of Nd:YAG lasers [9,10], pulses of 65 fs duration at 640 nm [9] have been obtained in a Rhodamine 6G/DODCI laser, and pulses of 60 fs duration at 675 nm were generated using Rhodamine 101 or Sulforhodamine 101 as gain media and DQTCI as absorber medium [10]. Subpicosecond Rhodamine B lasers have been operated 1 On leave from the Faculty of Physics, Sofia University, BG-1126 Sofia, Bulgaria.around 650 nm [10][11][12]. Cw passive mode-locking with DQTCI was achieved in the wavelength region of 616-658 nm [11]. However, the shortest duration was 220 fs at 635 nm [11]. Hybrid mode-locking of Rhodamin B lasers resulted in pulses of duration down to 320 fs in the spectral region between 604 and 632 nm when DQTCI or DDBCI were used as saturable absorbers [10,12]. Using Oxazine 720 as saturable absorber pulse durations down to 187 fs were obtained around 649 nm [10].Here we report on passive mode-locking of a Kiton Red laser with the saturable absorber DQTCI [13] producing sub 100 fs pulses in the wavelength region of 640-660 nm. The dyes Kiton Red 620 (Sulforhodamine B, free of sodium) [13,14] and DQTCI (1,3' -diethyl-4,2' -quinolythiacarbocyanine iodide) [13,15] were purchased from Lambda Physik. The fluorescence quantum yield of Kiton Red 620 in ethylene glycol was determined to be

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Section: Optics Communications 1 January 1993mentioning

confidence: 99%

“…The linear dispersion balanced laser configuration used here is described in detail elsewhere [19] and we outline the modifications only. The focusing mirrors have smaller radii of curvature, that is 5 cm in the gain section, and 3.8 cm and 2.5 cm in the absorber section.…”

mentioning

confidence: 99%

Femtosecond pulse generation around 650 nm in a passive mode-locked Kiton Red dye laser

Petrov

Wittmann

Bäumler

et al. 1993

Optics Communications

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“…I. The femtosecond laser consists of a linear six-mirror resonator with the gain cavity in the quarter resonator length position, the loss cavity in the resonator center position (absorber jet approximately at CPM position), the birefringent filter mounted in a rotation stage under Brewster angle, and the prism-pair adjusted to the group velocity dispersion balanced position (generation of shortest stable soliton-like pulses [ 12] absorber jet thickness is */ a *35 urn. For the prismpair dispersion balanced laser operation a detuning of the saturable absorber jet out of the CPM position has no influence on the laser performance as was shown in ref.…”

Section: Experimental Arrangementmentioning

confidence: 99%

“…For the prismpair dispersion balanced laser operation a detuning of the saturable absorber jet out of the CPM position has no influence on the laser performance as was shown in ref. [12].…”

Section: Experimental Arrangementmentioning

confidence: 99%

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Generation of frequency tunable femtosecond pulses in a cw pumped linear dispersion-balanced passive mode-locked rhodamine 6G dye laser

Wittmann

Penzkofer

Bäumler

1992

Optics Communications

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Frequency tunable femtosecond light pulses are generated in a cw pumped linear group velocity dispersion balanced passive mode-locked rhodamine 6G dye laser by birefringent filter tuning. The saturable absorbers DODCI (duration A/j < 100 fs in frequency region between 607 nm and 620 nm), DQOCI (A/ L < 100 fs between 585 nm and 615 nm). and TCVEBI (A/, < 100 fs between 585 nm and 615 nm) in ethylene glycol were applied.

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Saturable Absorption Dynamics of a Semiconductor Doped Glass

Wittmann

Penzkofer

1996

Ultrafast Processes in Spectroscopy

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Femtosecond pulse generation in a linear passive mode-locked dye laser

Cited by 13 publications

References 78 publications

Femtosecond pulse generation around 650 nm in a passive mode-locked Kiton Red dye laser

Femtosecond pulse generation around 650 nm in a passive mode-locked Kiton Red dye laser

Generation of frequency tunable femtosecond pulses in a cw pumped linear dispersion-balanced passive mode-locked rhodamine 6G dye laser

Saturable Absorption Dynamics of a Semiconductor Doped Glass

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