Self-diffraction: A new method for characterization of ultrashort laser pulses

Nighan, W. L.; Gong, Ting; Fauchet, Philippe M.

doi:10.1016/0030-4018(89)90129-6

Cited by 28 publications

(9 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A narrow coherence spike (consistent with the bandwidth limit of B600 fs) is centred on top of a broad pedestal (FWHM, autocorrelation time t AC B89 ps; contrast ratio B1:1). This implies a pulse width of t pulse B63 ps consistent with the results acquired with the sampling oscilloscope, but also indicates the existence of an intensity substructure 33,34 caused by internal FDML dynamics (see Discussion) 33,34 . Note that the uncertainty of the autocorrelation measurement itself can be considered negligible.…”

Section: Resultssupporting

confidence: 80%

Picosecond pulses from wavelength-swept continuous-wave Fourier domain mode-locked lasers

et al. 2013

View full text Add to dashboard Cite

Ultrafast lasers have a crucial function in many fields of science; however, up to now, highenergy pulses directly from compact, efficient and low-power semiconductor lasers are not available. Therefore, we introduce a new approach based on temporal compression of the continuous-wave, wavelength-swept output of Fourier domain mode-locked lasers, where a narrowband optical filter is tuned synchronously to the round-trip time of light in a kilometre-long laser cavity. So far, these rapidly swept lasers enabled orders-of-magnitude speed increase in optical coherence tomography. Here we report on the generation of B60-70 ps pulses at 390 kHz repetition rate. As energy is stored optically in the long-fibre delay line and not as population inversion in the laser-gain medium, high-energy pulses can now be generated directly from a low-power, compact semiconductor-based oscillator. Our theory predicts subpicosecond pulses with this new technique in the future.

show abstract

Section: Resultssupporting

confidence: 80%

Picosecond pulses from wavelength-swept continuous-wave Fourier domain mode-locked lasers

et al. 2013

View full text Add to dashboard Cite

show abstract

“…In this study, we used the pump-probe technique to generate Raman sidebands, and evaluated the temporal profile and the phase of the emissions using a self-diffraction (SD) frequency resolved optical gating (FROG) system [20][21][22]. From the fringe patterns observed in the FROG trace, we verified that the Raman sidebands were phase locked, and confirmed the generation of ultrashort optical pulses.…”

Section: Introductionmentioning

confidence: 64%

Generation of Ultrashort Optical Pulses in the Deep-Ultraviolet Region Based on Four-Wave Raman Mixing

Mori

Imasaka

2018

Applied Sciences

View full text Add to dashboard Cite

A two-color pump beam (800 and 1200 nm) was introduced into hydrogen for molecular phase modulation, and a probe beam (267 nm) to generate Raman sidebands, by coherent frequency modulation based on four-wave Raman mixing. The phase and temporal profile were evaluated by means of a self-diffraction frequency resolved optical gating (SD FROG) system. The relative phases among the Raman sidebands were controlled by changing the angle of a thin CaF 2-plate inserted into the 267-nm beam path, suggesting that a train of 2.6-fs pulses was generated in the deep-ultraviolet region.

show abstract

“…Although the third-order autocorrelation has a lower sensitivity because the third-order susceptibility, χ (3) , is small, there are several potential advantages: (1) elimination of ambiguity in the time domain, (2) availability of materials used in the UV region, and (3) a broad frequency domain for measurement. These preferable features have been utilized in the measurement of ultrashort optical pulses using χ (3) based on polarization-gating [18], self-diffraction [20,21], degenerate four-wave mixing [19], and third harmonic generation [22,23].…”

Section: Nonlinear Autocorrelation Tracementioning

confidence: 99%

In situ third-order interferometric autocorrelation of a femtosecond deep-ultraviolet pulse

2010

View full text Add to dashboard Cite

show abstract

Self-diffraction: A new method for characterization of ultrashort laser pulses

Cited by 28 publications

References 13 publications

Picosecond pulses from wavelength-swept continuous-wave Fourier domain mode-locked lasers

Picosecond pulses from wavelength-swept continuous-wave Fourier domain mode-locked lasers

Generation of Ultrashort Optical Pulses in the Deep-Ultraviolet Region Based on Four-Wave Raman Mixing

In situ third-order interferometric autocorrelation of a femtosecond deep-ultraviolet pulse

Contact Info

Product

Resources

About