Generation of a continuous-wave pulse train at a repetition rate of 176THz

Zaitsu, Shin Ichi; Eshima, Chihiro; Ihara, Kazuki; Imasaka, Totaro

doi:10.1364/josab.24.001037

Cited by 21 publications

(14 citation statements)

References 18 publications

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“…In addition to trace gas detection, this will contribute to our understanding of nonlinear optical phenomena in diluted gaseous molecules 17,18 and lead to the realization of a novel type of light source. 21 …”

Section: Discussionmentioning

confidence: 99%

Intracavity Phase-matched Coherent Anti-stokes Raman Spectroscopy for Trace Gas Detection

Zaitsu

Imasaka

2014

ANAL. SCI.

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Section: Discussionmentioning

confidence: 99%

Intracavity Phase-matched Coherent Anti-stokes Raman Spectroscopy for Trace Gas Detection

Zaitsu

Imasaka

2014

ANAL. SCI.

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“…A separate weaker mixing laser can also be modulated in a single pass through the system. Our scheme was motivated by the recent pioneering experiments of Carlsten and colleagues that have demonstrated CW Raman lasing of the Stokes beam inside a high-finesse cavity [21][22][23][24][25][26]35]. We have extended these experiments to the regime of sufficiently high coherence such that significant modulation can be produced in a single pass through the system.…”

Section: Molecular Modulation With Cw Lasersmentioning

confidence: 99%

“…Over the last five years, we have been working towards accomplishing this goal. To achieve the intensities required by the molecular modulation technique with CW lasers, our approach has been to place the molecules inside a cavity with a high finesse at the pump and at the Stokes wavelengths [21][22][23][24][25][26][27]. Our prior experiments have demonstrated CW stimulated Raman scattering in a previously inaccessible regime: at very low gas pressures with an established CW molecular coherence more than two orders of magnitude larger than previously achieved [28].…”

Section: Introductionmentioning

confidence: 99%

Continuous-Wave Molecular Modulation Using a High-Finesse Cavity

2014

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Abstract:We demonstrate an optical modulator at a frequency of 90 THz that has the capability to modulate any laser beam in the optical region of the spectrum. The modulator is constructed by placing deuterium molecules inside a high-finesse cavity and driving a vibrational transition with two continuous-wave laser beams. The two beams, the pump and the Stokes, are resonant with the cavity. The high intra-cavity intensities that build up drive the molecules to a coherent state. This molecular coherence can then be used to modulate an independent laser beam, to produce frequency up-shifted and down-shifted sidebands. The beam to be modulated is not resonant with the cavity and thus the sidebands are produced in a single pass.

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“…1(a) and (b), respectively, in which the operation pump wave modulated by ∼4.17 THz repetition rate can be achieved by utilizing many techniques [8][9][10], and the required CW light is easily satisfied. In the Fig.…”

Section: Model and Equationsmentioning

confidence: 99%

Dual-Wavelength Pulse Train Generation Based on Silicon-on-Insulator Optical Waveguides

Bao

2009

J Infrared Milli Terahz Waves

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In this paper, we present and numerically study a method with pump-probe configuration to generate ∼4.17-THz dual-wavelength ultrahigh-repetition-rate pulse train from the continuous-waves (CW) based on the submicron silicon-on-insulator (SOI) optical waveguides. An original ∼4.17 THz repetition rate pulsed pump, with femtosecond pulse duration, at 2900 nm (mid-wave infrared wavelength-MWIR) and 2-channel CW lights at 1450 nm and 1650 nm (near infrared wavelengths) are simultaneously launched into the silicon waveguide. Results show that, when both of CW lights with high intensity pulsed pump are co-propagating along the SOI waveguide, the CW lights will, respectively, experience normal and anomalous group velocity dispersion (GVD) regimes, leading to developing into two inverted ∼4.17 THz repetition rate pulse train by the combined effects of GVD and nonlinear frequency chirp induced by pulsed pump inside the waveguide. Moreover, the outcome pulse trains have short pulse duration and high extinction ratio (ER) comparing with the original pulsed pump if the systems parameters such as input power and waveguide length are judiciously adjusted.

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Generation of a continuous-wave pulse train at a repetition rate of 176THz

Cited by 21 publications

References 18 publications

Intracavity Phase-matched Coherent Anti-stokes Raman Spectroscopy for Trace Gas Detection

Intracavity Phase-matched Coherent Anti-stokes Raman Spectroscopy for Trace Gas Detection

Continuous-Wave Molecular Modulation Using a High-Finesse Cavity

Dual-Wavelength Pulse Train Generation Based on Silicon-on-Insulator Optical Waveguides

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