Applications of Ultrafast Lasers

Diels, Jean‐Claude; Jones, R. Jason; Arissian, Ladan

doi:10.1007/0-387-23791-7_12

Cited by 11 publications

(6 citation statements)

References 19 publications

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“…where n e is the extraordinary index of refraction, r 33 electrooptic coefficient and l is the length of the crystal in the x direction. The expected contribution to the beat-note frequency will be given by [5]:…”

Section: Methodsmentioning

confidence: 99%

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Subharmonic synchronously intracavity pumped picosecond optical parametric oscillator for intracavity phase interferometry

Zavadilová¹,

Vyhĺıdal²,

Kubeček³

et al. 2014

Laser Phys. Lett.

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The laser system suitable for precise intracavity phase interferometry is presented. The system is based on an intracavity pumped PPLN linear optical parametrical oscillator (OPO). For synchronous pumping of OPO a SESAM-mode-locked, picosecond, diode-pumped Nd:YVO 4 linear oscillator, operating at 1.06 µm was used. The OPO cavity was set to be twice as long as the pumping Nd:YVO 4 laser cavity. The pumping laser was set in such a manner that the parametric gain inside the PPLN overcame the OPO threshold only for one direction of pumping pulse propagation. This leads to the generation of two independent trains of pulses at the 1.5 µm spectral range. To verify the system performance, a LiNbO 3 electro-optic phase modulator was placed inside the OPO. The RF-signal derived from the pumping pulse train, detected by a fast photodiode and divided by two, was applied on the modulator. A stable beat-note signal between the two OPO trains was successfully measured for the first time from such a compact, all-diode-pumped laser system. For RF-signal amplitude from 100 up to 700 mV beat-note frequency varied from 232 up to 1847 Hz which corresponded to detected phase-shift 36-250 µrad. The bandwidth of beat-note was less than 1 Hz (FWHM) resulting in phase-shift measurement error 1.5 × 10 −7 rad.

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Section: Methodsmentioning

confidence: 99%

“…The beat-note frequency Δν of the combs which is simply Δν = 2 π Δ ϕ/τ RT , where Δϕ is the detected phase difference and τ RT the cavity round-trip time. The accuracy of the measurement is limited by the bandwidth of the beat-note, which has been shown to be in the order of 1 Hz [5].…”

Section: Introductionmentioning

confidence: 99%

Subharmonic synchronously intracavity pumped picosecond optical parametric oscillator for intracavity phase interferometry

Zavadilová¹,

Vyhĺıdal²,

Kubeček³

et al. 2014

Laser Phys. Lett.

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show abstract

“…The beat note frequency ∆ν that is being measured is sim- ply ∆ν = 2π∆ϕ/τ RT , where ∆ϕ is the phase difference and τ RT the cavity round-trip time. The accuracy of the measurement is limited by the bandwidth of the beat note, which has been shown to be of the order of 1 Hz [6] (hence considerably narrower than the bandwidth as the individual modes of the laser), bandwidth that can be reduced through active cavity stabilization techniques.…”

Section: Introductionmentioning

confidence: 99%

“…M1flat mirror, M2, M3 -spherical mirrors (r = 500 and 300 mm), all highly reflective at 1.06 µm, M4 -QW saturable absorber combined with mirror, LD -fiber coupled laser diode, PPLN -MgO:PPLN crystal, M5 -spherical mirrors (r = 75 mm), M6 -end mirror of OPO cavity with radius of curvature of 5 m (T = 2%), M7 -flat output mirror of OPO resonator (T = 11% at 1.53 µm), L3 -spherical lenses (f = 100 mm), AR coated at 1.06 µm ply ∆ν = 2π∆ϕ/τ RT , where ∆ϕ is the phase difference and τ RT the cavity round-trip time. The accuracy of the measurement is limited by the bandwidth of the beat note, which has been shown to be of the order of 1 Hz [6] (hence considerably narrower than the bandwidth as the individual modes of the laser), bandwidth that can be reduced through active cavity stabilization techniques.…”

Section: Introductionmentioning

confidence: 99%

Picosecond optical parametric oscillator pumped synchronously, intracavity, by a mode-locked Nd:YVO₄ laser

Zavadilová¹,

Kubeček²,

Diels³

2006

Laser Phys. Lett.

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Abstract:The operation of a picosecond synchronously intracavity pumped optical parametric oscillator (OPO) is reported. A magnesium doped lithium niobate crystal (MgO:PPLN), periodically poled, is used as the optical parametric oscillator crystal coupling the pump and the resonant signal cavities. The active medium of the pump cavity is a a diode pumped passively mode-locked Nd:YVO 4 crystal. Continuous mode-locked operation was achieved, tunable from 1531 to 1554 nm by adjusting the OPO crystal from 31 to 55• C. The spectral width of the generated radiation was 2 nm.

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“…Therefore, they can be made to interfere on a detector, producing a beat note at the carrier frequency difference. In all sensor applications, the physical quantity to be measured is converted into a phase difference between the two counter-circulating pulses in the cavity [2]. Recently we have developed an intracavity synchronously pumped optical parametrical oscillator (OPO), generating two independent trains of picosecond pulses [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Synchronously intracavity pumped dual pulse optical parametric oscillator

et al. 2011

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Abstract:We developed an intracavity synchronously pumped optical parametrical oscillator, generating two independent trains of picosecond pulses at wavelength 1540 nm. We have improved and optimized experimental setup from the point of view of achievability of stable mode-locking and compensation of astigmatism. Present setup is as very little sensitive on the action of thermal lens generated in the Nd:YVO 4 crystal by laser diode pumping radiation and it is possible to work on wider range of pump intensities without risks of detuning of modelocking. The characteristic of laser system were measured and the influence of external conditions on dual pulse generation was studied. Sketch of the intracavity pumped OPO

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Applications of Ultrafast Lasers

Cited by 11 publications

References 19 publications

Subharmonic synchronously intracavity pumped picosecond optical parametric oscillator for intracavity phase interferometry

Subharmonic synchronously intracavity pumped picosecond optical parametric oscillator for intracavity phase interferometry

Picosecond optical parametric oscillator pumped synchronously, intracavity, by a mode-locked Nd:YVO₄ laser

Synchronously intracavity pumped dual pulse optical parametric oscillator

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Applications of Ultrafast Lasers

Cited by 11 publications

References 19 publications

Subharmonic synchronously intracavity pumped picosecond optical parametric oscillator for intracavity phase interferometry

Subharmonic synchronously intracavity pumped picosecond optical parametric oscillator for intracavity phase interferometry

Picosecond optical parametric oscillator pumped synchronously, intracavity, by a mode-locked Nd:YVO4 laser

Synchronously intracavity pumped dual pulse optical parametric oscillator

Contact Info

Product

Resources

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Picosecond optical parametric oscillator pumped synchronously, intracavity, by a mode-locked Nd:YVO₄ laser