Homodyne optical phase locking of resonant cavity coupled semiconductor lasers

Shin, Chae Ho; Ohtsu, Motoichi

doi:10.1109/3.199292

Cited by 13 publications

(3 citation statements)

References 60 publications

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“…As discussed above, it is essential to control the phase of the polariton condensate in order to take advantage of the intrinsic nonlinearity that the polaritons experience when in the QWs. To achieve this, a homodyne measurement of the output light of the polaritons is performed against a local oscillator with a relatively stable phase [47]. The positive x homodyne current is fed back to the SWG actuator.…”

Section: Proposed Experimental Systemmentioning

confidence: 99%

Steady-state generation of negative-Wigner-function light using feedback

Joana¹,

Loock²,

Deng³

et al. 2016

Phys. Rev. A

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We propose a method of producing steady-state coherent light with negative Wigner functions in nonlinear media combined with feedback control. While the nonlinearities are essential to produce the Wigner negativities, this alone is insufficient to stabilize steady-state light with negativities. Using feedback control to control the phase in the cavity we find that this produces significant total negativities for reasonable experimental parameters. The negative Wigner function is produced continuously and does not appear to be restricted to low amplitude light. The technique is applicable to systems such as exciton-polaritons, where strong natural nonlinearities are present.

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Section: Proposed Experimental Systemmentioning

confidence: 99%

Steady-state generation of negative-Wigner-function light using feedback

Joana¹,

Loock²,

Deng³

et al. 2016

Phys. Rev. A

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“…Highfinesse FPEs have been used for linewidth reduction or frequency stabilization of a semiconductor laser, optoelectronic oscillators, WDM filtering, and so on [1][2][3]. They have also been used for repetition-rate multiplication of pulsed lasers by spectral filtering [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Improvement of a Pound-Drever-Hall Technique to Measure Precisely the Free Spectral Range of a Fabry-Perot Etalon

Seo

Park

Leaird³

et al. 2015

Journal of the Optical Society of Korea

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We examine the principle of a modified Pound-Drever-Hall (PDH) technique to measure the free spectral range of a Fabry-Perot etalon (FPE). The FPE's periodic transmission of phase-modulated light allows us to adopt a sampling theorem to develop a new relationship for the PDH error signal. This leads us to find the key parameters governing the measurement accuracy: the phase modulation index β and the FPE finesse. Without any additional complexity for background noise reduction, we achieve a measurement accuracy of 0.5 ppm. The improvement is mainly attributed to the wide-band phase modulation approaching β = 10, and partly to the use of both reflected and transmitted light from the FPE and good FPE finesse.

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“…1,2) Many studies have been reported on the reduction of the spectral linewidth of laser diodes (LDs) with optical feedback and electrical feedback. [3][4][5][6] Specifically, Zhao et al demonstrated 100-Hz-linewidth LDs using an optical-and electrical-feedback system with a high-finesse external cavity. 7) Although these typical systems can be used to reduce the linewidth to less than 1 kHz, they are fairly large and complicated.…”

mentioning

confidence: 99%

Experimental demonstration of linewidth reduction of laser diode by compact coherent optical negative feedback system

Aoyama

Yoshioka

Yokota

et al. 2014

Appl. Phys. Express

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We demonstrate the linewidth reduction of a laser diode from 6.4 MHz to 6.5 kHz using a compact coherent optical negative feedback system, which consists of only a lens and an optical filter. The FM noise power spectral density (PSD) and the relative intensity noise (RIN) of the laser output are measured to discuss the performance of the system. The FM noise PSD is reduced by ∼30 dB at <100 MHz. The RIN of ∼130 dB/Hz is not found to be increased by the feedback at <7 GHz, where the system is driven under negative feedback conditions.

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Homodyne optical phase locking of resonant cavity coupled semiconductor lasers

Cited by 13 publications

References 60 publications

Steady-state generation of negative-Wigner-function light using feedback

Steady-state generation of negative-Wigner-function light using feedback

Improvement of a Pound-Drever-Hall Technique to Measure Precisely the Free Spectral Range of a Fabry-Perot Etalon

Experimental demonstration of linewidth reduction of laser diode by compact coherent optical negative feedback system

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