Multichannel optical recording using monolithic arrays of diode lasers

Carlin, D. B.; Bednarz, J.P.; Kaiser, C. J.; Connolly, J.C.; Harvey, M. G.

doi:10.1364/ao.23.003994

Cited by 28 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach provides individual channel modulation for writing and mutual incoherence of the beams. This has been demonstrated with three, 20 four, 21,22 and eight 23 channels to reach a sustained transfer rate of 300 Mbits͞s. Variations of the radial track pitch (so-called track squeeze) make it difficult to maintain simultaneous tracking of all channels simultaneously, so wavelength tuning of the individual lasers combined with a grating has been proposed 24 as a steering method.…”

Section: Introductionmentioning

confidence: 91%

Acousto-Optic Parallel Read/Write Head for Optical Disk Data Storage

McLeod

Walter

2005

International Symposium on Optical Memory and Optical Data Storage

View full text Add to dashboard Cite

Parallel read and write of optical disks has traditionally used a static grating for read or a linear array of independent lasers for read and write. Depending on the implementation, these systems suffer from coherent cross talk, excessive space between spots, and an inability to independently track. We show that a dynamic acousto-optic grating can generate multiple parallel read͞write spots on the disk, each of which can be independently modulated and tracked and all of which are incoherent in less that a bit period. The resulting disk pickup can potentially reach gigabit per second transfer rates with only a modest increase in the drive complexity.

show abstract

Section: Introductionmentioning

confidence: 91%

Acousto-Optic Parallel Read/Write Head for Optical Disk Data Storage

McLeod

Walter

2005

International Symposium on Optical Memory and Optical Data Storage

View full text Add to dashboard Cite

show abstract

“…For example, a study of multichannel recording using monolithic LD arrays was presented. 9) In this section, we demonstrate an exper-~30µm Cone angle ~ 70 deg. imental result of near-field recording/readout using a monolithic dual-beam BLD and a SIL with a 1.84 NA.…”

Section: Near-field Recording/readout With Monolithicmentioning

confidence: 99%

High Density Near-Field Optical Disc System

Shinoda

Saito

Ishimoto

et al. 2006

jjap

View full text Add to dashboard Cite

Key technologies for near-field recording/readout systems using a solid immersion lens (SIL) are summarized in this paper. Our system employing a SIL of 1.84 numerical aperture (NA) and a laser diode (LD) of 405 nm wavelength has realized the capacity of a 112 GB in a 12 cm diameter phase-change disc along with a write-power margin of ±11.2% and a data transfer rate of 36 Mbps. Such a larger-capacity data storage system should provide a high data transfer rate. A preliminary result of 1.84 NA dual-channel near-field recording/readout using a monolithic dual-beam LD with 412 nm wavelength is presented.

show abstract

“…In this paper, we propose a parallelisation strategy employing multiple probes to reduce total scan time. Similar strategies have been employed in other domains such as optical data storage, SEM and confocal microscopy where throughput is generally limited by the scanning time [11][12][13][14][15]. Here, we use a diffraction grating to generate multiple optical beams and an array of split detectors for detection.…”

Section: Introductionmentioning

confidence: 99%

Multi-beam coherent Fourier scatterometry

Soman,

Horsten,

Scholte

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

Inspection of surface and nanostructure imperfections play an important role in high-throughput manufacturing across various industries. This paper introduces a novel, parallelised version of the metrology and inspection technique: Coherent Fourier Scatterometry (CFS). The proposed strategy employs parallelisation with multiple probes, facilitated by a diffraction grating generating multiple optical beams and detection using an array of split detectors. The article details the optical setup, design considerations, and presents results, including independent detection verification, calibration curves for different beams, and a data stitching process for composite scans. The study concludes with discussions on the system's limitations and potential avenues for future development, emphasizing the significance of enhancing scanning speed for the widespread adoption of CFS as a commercial metrology tool.

show abstract

Multichannel optical recording using monolithic arrays of diode lasers

Cited by 28 publications

References 6 publications

Acousto-Optic Parallel Read/Write Head for Optical Disk Data Storage

Acousto-Optic Parallel Read/Write Head for Optical Disk Data Storage

High Density Near-Field Optical Disc System

Multi-beam coherent Fourier scatterometry

Contact Info

Product

Resources

About