Self-coupled optical pickup

Mitsuhashi, Yoshinobu; Morikawa, Takayuki; Sakurai, K.; Seko, Atsuya; Shimada, Junichi

doi:10.1016/0030-4018(76)90187-5

Cited by 53 publications

(11 citation statements)

References 2 publications

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“…Seko et al [10] demonstrated "self quenching" of a LD in front of which a mirror is placed or is absent, i.e., they observed a change in the intensity emitted at the back facet of the LD. They further demonstrated a primitive optical data reader based on a rotating disc with cutouts placed in the external cavity [11].…”

Section: Introductionmentioning

confidence: 99%

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Reading bits on a CD‐ROM without a photodiode

Wishon

Locquet

Mourozeau

et al. 2017

IET Optoelectronics

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Abstract:We demonstrate that the bits of a CD-ROM can be read without a photodiode (PD). A commercial CD-ROM drive was used and left unmodified except a beam splitter was removed which would route the light to a PD. This allowed for the reflected light to be incident on the laser within the laser package itself. By monitoring fluctuations in the voltage across the laser diode (LD) under constant-current injection, it was possible to read and interpret the bits from a spinning CD-ROM.

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Section: Introductionmentioning

confidence: 99%

“…In Ref. [10] it was shown that the change in feedback can be sensed via the LD terminal voltage V under constant-current J operation. While it was suggested in [10] to monitor V as the optical-data readout parameter, the experiment does not appear to have been carried out.…”

Section: Introductionmentioning

confidence: 99%

Reading bits on a CD‐ROM without a photodiode

Wishon

Locquet

Mourozeau

et al. 2017

IET Optoelectronics

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“…This PD can be used for detecting the self-mixing signal. With a simply constructed optical system, the self-mixing effect has been applied to many kinds of optical sensors 7,8 and Doppler velocimeters. [9][10][11] The signal obtained by the self-mixing effect is a kind of interference signal and is called the self-mixing interference ͑SMI͒ signal.…”

Section: Introductionmentioning

confidence: 99%

Self-mixing type of phase-locked laser diode interferometer

et al. 1999

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A new type of phase-locked laser diode interferometer that uses self-mixing interference in the optical system is described. The selfmixing interference (SMI) signal is obtained easily by optical feedback, i.e., feeding back the laser beam from the object to the laser diode (LD). The SMI signal can be detected by a photodiode in the package of the LD. Therefore, a beamsplitter, reference mirror, and external photodetector are not required, and an interference signal is obtained using a simple optical system. Although the mechanism of SMI is completely different from that of conventional interference, it is shown that the response of the SMI signal to phase changes is the same as that of conventional interference. We used the phase-locked technique to fix the phase change and demonstrated measurement of absolute distance and displacement.

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“…is referred to as the optical feedback factor defined as follows [6], [19]- [22]: (4) where , , , and are the power reflectivity of the laser mirrors, the power reflectivity of the external cavity surface, the coupling coefficient of the feedback power, and the round trip time in the SL chip, respectively. is a system parameter first proposed by Lenstra et al [22].…”

mentioning

confidence: 99%

“…As indicated by (4), is a parameter depending on many factors including the structure of the SL and the characteristic of the external target. As a result, it is a bit difficult to precisely control the value in practice.…”

mentioning

confidence: 99%

Optical Feedback Self-Mixing Interferometry With a Large Feedback Factor $C$: Behavior Studies

Chicharo

et al. 2009

IEEE J. Quantum Electron.

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This paper studies the behavior of optical feedback self-mixing interferometric (OFSMI) systems, where the semiconductor lasers operate at a single mode (perturbed external cavity mode) with a large optical feedback factor C. Based on analysis of the spectral linewidth associated with all the possible lasing modes at different C values, a set of mode jumping rules are proposed following the minimum linewidth mode competition principle proposed in . According to the rules, the C factor can be classified into different regions, on which an OFSMI system will exhibit distinct phenomena. In particular, for the same amount of displacement associated with the external cavity, the fringe number reduction on the OFSMI signal should be observed when C increases from one region to the next. An experimental setup with a laser diode HL7851G was implemented and employed to verify the proposed rules. The behavior of the OFSMI predicted by the paper has been confirmed by the experiments with C value up to 8.0. Disciplines Physical Sciences and Mathematics Publication DetailsYu, Y., Xi, J., Chicharo, J. . According to the rules, the factor can be classified into different regions, on which an OFSMI system will exhibit distinct phenomena. In particular, for the same amount of displacement associated with the external cavity, the fringe number reduction on the OFSMI signal should be observed when increases from one region to the next. An experimental setup with a laser diode HL7851G was implemented and employed to verify the proposed rules. The behavior of the OFSMI predicted by the paper has been confirmed by the experiments with value up to 8.0.Index Terms-Mode competition, optical feedback factor, optical feedback interferometry, self-mixing effect, semiconductor laser (SL).

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Self-coupled optical pickup

Cited by 53 publications

References 2 publications

Reading bits on a CD‐ROM without a photodiode

Reading bits on a CD‐ROM without a photodiode

Self-mixing type of phase-locked laser diode interferometer

Optical Feedback Self-Mixing Interferometry With a Large Feedback Factor $C$: Behavior Studies

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