Two-longitudinal-mode laser diodes

Iio, Shouichiro; Suehiro, Masayuki; Hirata, T.; Hidaka, T.

doi:10.1109/68.414668

Cited by 38 publications

(17 citation statements)

References 9 publications

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“…The period of the grating and the interval of the phase shifts determine the center wavelength and the separation of the two modes, respectively. 8) Figure 1 shows the emission spectra of the two-mode LD measured at 191 mA bias current and at 19 • C using a double monochromator with a resolution of 4. breakdown field that is larger than 5×10 5 V/cm. 9) These properties satisfy the requirements for the photoconductive device material of a THz photomixer.…”

Section: Resultsmentioning

confidence: 99%

Generation of cw-Terahertz Radiation Using a Two-Longitudinal-Mode Laser Diode

Gu¹,

Tani²,

Hyodo³

et al. 1998

Jpn. J. Appl. Phys.

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Coherent cw-terahertz (THz) radiation has been generated by photomixing with a photoconductive antenna fabricated on a low-temperature-grown (LTG) GaAs film using a two-longitudinal-mode distributed Bragg reflector (DBR) laser diode (LD). The frequency of the emitted radiation corresponds to the difference frequency between the two modes of the LD. The linewidth of the radiation is much narrower than that of each laser mode oscillating in the same cavity due to the common-mode rejection effect between the two modes oscillating in the same cavity. This property of the two-mode LD, as well as its compactness and ease of optical alignment, make the device promising as an excitation laser source for photomixing.

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Section: Resultsmentioning

confidence: 99%

Generation of cw-Terahertz Radiation Using a Two-Longitudinal-Mode Laser Diode

Gu¹,

Tani²,

Hyodo³

et al. 1998

Jpn. J. Appl. Phys.

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“…These sources, also known as dual-mode or two-color lasers, are multimode lasers specifically designed to emit two longitudinal modes. Several dual-wavelength systems have been reported in the literature, such as coupling of two separate lasers [2], single external-cavity lasers (microchip lasers) [3], and emission of two modes from integrated DBR or DFB lasers (dual-distributed-feedback lasers) [4]- [6]. Among the various reported configurations, simultaneous emission from two modes within the same laser cavity is very appealing due to its compactness, stability, and spectral quality [1].…”

Section: Introductionmentioning

confidence: 98%

Dual-Wavelength InAlGaAs–InP Laterally Coupled Distributed Feedback Laser

Pozzi

Rue

Sorel

2006

IEEE Photon. Technol. Lett.

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The design and operation of a novel dual-wavelength laterally coupled (LC) distributed feedback (DFB) semiconductor laser are reported. The laser has two different grating periods, one on each sidewall. Stable dual-mode emission, with low threshold currents and good extinction ratio approaching 30 dB, has been demonstrated. Generation of millimeter-wave signals by photomixing has been performed, and the linewidths of each of the individual modes and of the beat mode have been measured as a function of the injection current. It is observed that while the linewidth of the separate modes has a modest dependence on the injection level, the linewidth of the beat mode experiences a strong decrease as the injected current increases.

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“…D UAL wavelength semiconductor lasers have attracted great interests because they can be widely applied in many fields [1]- [6], especially for photonic generation of microwave [3]- [6]. Many methods have been developed to realize such devices, such as asymmetric dual quantum wells [2], dual-wavelength laser source integrated with Y-Junction coupler [3], laterally coupled DFB laser [4], and multisection DFB laser [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Dual Wavelength Semiconductor Laser Based on Reconstruction-Equivalent-Chirp Technique

et al. 2013

IEEE Photon. Technol. Lett.

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A novel dual wavelength semiconductor laser is proposed and experimentally demonstrated. Stable dual wavelength lasing is established by the grating structure consisting of two asymmetric phase-shifts, which are distributed along the phase-arranging regions in the sampling pattern. The wavelength spacing between the two modes is about 0.51 nm at room temperature. A microwave signal at about 64 GHz can be generated by beating the two wavelengths. Based on the reconstructionequivalent-chirp technique, the laser is fabricated by a low-cost manufacturing method.

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Two-longitudinal-mode laser diodes

Cited by 38 publications

References 9 publications

Generation of cw-Terahertz Radiation Using a Two-Longitudinal-Mode Laser Diode

Generation of cw-Terahertz Radiation Using a Two-Longitudinal-Mode Laser Diode

Dual-Wavelength InAlGaAs–InP Laterally Coupled Distributed Feedback Laser

Dual Wavelength Semiconductor Laser Based on Reconstruction-Equivalent-Chirp Technique

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