Tunable dual-wavelength continuous-wave diode laser operated at 830 nm

Lotem, Haim; Pan, Zeqi; Dagenais, M.

doi:10.1364/ao.32.005270

Cited by 11 publications

(4 citation statements)

References 8 publications

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“…77, the linewidth of the beat frequency of the two modes is narrower than that of individual laser modes because of the common-mode rejection effect for the two modes oscillating in the same cavity. External cavity dual-mode semiconductor lasers have been realized in a variety of methods, such as those with a double grating, 56,133 grating-lens, 134 grating-double-slit, 134 grating-double-stripe-mirror 73,135 configurations, etc.…”

Section: Using Fourier Transformationmentioning

confidence: 99%

Review of photomixing continuous-wave terahertz systems and current application trends in terahertz domain

Safian¹,

Ghazi²,

Mohammadian

2019

Opt. Eng.

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Within the last two decades, terahertz systems have become a well-established tool in scientific laboratories and industrial research and development departments. Unlike the methods of pulsed terahertz radiation that mainly rely on ultrafast optical technology, the technology behind continuous-wave terahertz sources and detectors has a long history involving many different types of technical schemes. The intent is to provide a brief review of the continuous-wave terahertz systems that are based on photomixing and current application trends in the field of terahertz technology.

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Section: Using Fourier Transformationmentioning

confidence: 99%

Review of photomixing continuous-wave terahertz systems and current application trends in terahertz domain

Safian¹,

Ghazi²,

Mohammadian

2019

Opt. Eng.

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“…To achieve two-colour operation, a beamsplitter is introduced into the cavity and a second grating is used to feed back and spectrally control the second beam. The output beam is then collected from the unused path of the beamsplitter or the back facet of the diode laser [59,60]. A major problem of this configuration is that it includes rather high losses in the cavity due to the beamsplitter and the outcoupling through the uncoated laser diode facet.…”

Section: Narrowband Thz Systemsmentioning

confidence: 99%

Semiconductor Diode Lasers for Terahertz Technology

Brenner

Friedrich

Hofmann

2011

J Infrared Milli Terahz Waves

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We discuss different concepts for generating terahertz (THz) radiation with semiconductor diode lasers. Photomixing enables the generation of continuous wave THz radiation by difference frequency generation of two lasers or of two-colour lasers. Pulsed THz radiation for time domain THz spectroscopy is generated with modelocked diode laser systems including amplification and chirp compression. Finally, we analyse the concept of quasi time domain spectroscopy based on broadband diode laser systems.

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“…External cavity dual-mode semiconductor lasers have been realized in a variety of methods, such as those with a doublegrating [35,36], grating-lens [37], grating-double-slit [38] or grating-double-stripe-mirror [39][40][41] configurations, etc. For example, Wang and Pan [39] used a laser diode (LD) array combined with an external cavity consisting of a grating, a focus lens and a V-shaped double-stripe end mirror.…”

Section: External Cavity Dual-mode Ldmentioning

confidence: 99%

Generation of terahertz radiation by photomixing with dual- and multiple-mode lasers

Tani

Morikawa

Matsuura

et al. 2005

Semicond. Sci. Technol.

143

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Photomixing with dual-mode and multi-mode lasers in the sub-terahertz frequency region is presented with a description on the principle and efficiency of photomixing on low-temperature-grown-GaAs photoconductive antennae for generation of continuous-wave terahertz (THz) radiation. The difference frequency stabilization by the common-mode-rejection effect in the dual-mode lasers is discussed with several reported experimental results. It is also shown that generation and detection of broadband sub-THz radiation is possible by photomixing with multi-mode semiconductor lasers on the emitter and detector photoconductive antennae (multi-mode-laser-diode-based terahertz time-domain spectroscopy, MLD-TDS). The MLD-TDS system can be a low-cost and broadband spectrometer in the sub-THz frequency region, which is useful for measurement of complex refractive indices and carrier densities of semiconductor wafers.

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Tunable dual-wavelength continuous-wave diode laser operated at 830 nm

Abstract: An external grating cavity semiconductor diode laser is made to operate simultaneously at two separately adjustable wavelengths. Lasing is restricted to the vicinity of the solitary laser 6talon resonances.

Cited by 11 publications

References 8 publications

Review of photomixing continuous-wave terahertz systems and current application trends in terahertz domain

Review of photomixing continuous-wave terahertz systems and current application trends in terahertz domain

Semiconductor Diode Lasers for Terahertz Technology

Generation of terahertz radiation by photomixing with dual- and multiple-mode lasers

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