New Two-Color Laser Concepts for THz Generation

Friedrich, Claus-Stefan; Brenner, Carsten; Hoffmann, Stefan; Schmitz, A.; Mayorga, Iván Cámara; Klehr, A.; Erbert, G.; Hofmann, Martin R.

doi:10.1109/jstqe.2007.912754

Cited by 48 publications

(21 citation statements)

References 22 publications

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“…Different techniques have been developed to achieve dual-wavelength operation of a diode laser system, and they mainly can be classified into two categories: (1) Monolithic dual-wavelength diode lasers [6][7][8][9][10], and (2) diode laser systems based on different external-cavity feedback techniques [11][12][13][14][15][16][17]. The monolithic dual-wavelength diode lasers show stable dual-wavelength operation, but the frequency difference of the two wavelengths is not tunable or the tuning range is limited, and the output power from the monolithic dual-wavelength diode lasers is normally less than 500 mW [8].…”

Section: Introductionmentioning

confidence: 99%

“…The monolithic dual-wavelength diode lasers show stable dual-wavelength operation, but the frequency difference of the two wavelengths is not tunable or the tuning range is limited, and the output power from the monolithic dual-wavelength diode lasers is normally less than 500 mW [8]. Different external-cavity feedback techniques have been developed for dual-wavelength diode laser systems, and different frequency selective elements have been used in these dual-wavelength external-cavity diode laser systems, such as bulk diffractive gratings for the double-Littman and double-Littrow external-cavity techniques [11,12,15], dual-fiber Bragg grating [13], dual-period holographic element [14], and single-wavelength volume Bragg gratings or monolithic multiplexed Bragg grating [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Dual-wavelength high-power diode laser system based on an external-cavity tapered amplifier with tunable frequency difference

2012

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual-wavelength high-power diode laser system based on an external-cavity tapered amplifier with tunable frequency difference

2012

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“…An extended survey of the proposed configurations of the ECLs that can generate two−colour beams was published in Ref. 9. A review of state of the art developments concerning configurations and properties of various ECLs can be found in Ref.…”

Section: Introductionmentioning

confidence: 99%

Double-frequency external cavity laser with a singular optical semiconductor amplifier

Kowalczyk

Szyjer

Fronc

et al. 2009

Opto-Electronics Review

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Optical properties of an external cavity laser with a semiconductor optical amplifier and two diffraction gratings are described. The laser has been pigtailed and its emission showed two peaks in the output spectrum. The wavelength of the peaks, and in particular the spectral spacing between them, could be controlled by adjusting the reflecting elements in the system. The proposed double-frequency laser may be adopted as a signal source in terahertz generators.

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“…Radiation sources of high power, near-infrared diffraction limited and single frequency are also required for a myriad of scientific applications such as materials characterization or laser and amplifier pumping and frequency doubling. Pairs of such diode lasers with appropriately selected frequency were used to generate terahertz waves [1,2] which have already become an important tool for penetrating solid objects in the quest to improve imaging technology. One of the key current trends in optical networking is redirecting of a time -division multiplexed (TDM) trend towards wavelength -division multiplexed (WDM) systems [3].…”

Section: Introductionmentioning

confidence: 99%

External cavity wavelength tunable semiconductor lasers - a review

Mroziewicz

2008

Opto-Electronics Review

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External cavity tunable lasers have been around for many years and now constitute a large group of semiconductor lasers featuring very unique properties. The present review has been restricted to the systems based on the edge emitting diode lasers set-up in a hybrid configuration. The aim was to make the paper as concise as possible without sacrificing, however, most important details. We start with short description of the fundamentals essential for operation of the external cavity lasers to set the stage for explanation of their properties and some typical designs. Then, semiconductor optical amplifiers used in the external cavity lasers are highlighted more in detail as well as diffraction gratings and other types of wavelength-selective reflectors used to provide optical feedback in these lasers. This is followed by a survey of designs and properties of various external cavity lasers both with mobile bulk gratings and with fixed wavelength selective mirrors. The paper closes with description of some recent developments in the field to show prospects for further progress directed towards miniaturization and integration of the external cavity laser components used so far to set-up hybrid systems.

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New Two-Color Laser Concepts for THz Generation

Cited by 48 publications

References 22 publications

Dual-wavelength high-power diode laser system based on an external-cavity tapered amplifier with tunable frequency difference

Dual-wavelength high-power diode laser system based on an external-cavity tapered amplifier with tunable frequency difference

Double-frequency external cavity laser with a singular optical semiconductor amplifier

External cavity wavelength tunable semiconductor lasers - a review

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