Abstract
The optical memory system still has some shortcomings such as slow tracking access speed and high fabrication cost due to its relatively heavy head weight and complex optical elements. To overcome these limitations, a new lensless optical floppy disk drive has been developed using a phase change optical floppy disk and an external cavity semiconductor laser with a good antireflection (AR) coaling on the emitting facet. The main components of this novel system are a contact-type head of quasi-near-field optics and a phase change medium prepared on a flexible polyimide substrate. The AR-coated semiconductor laser oscillates externally with the disk and its laser emission output shows sufficient variance to detect the phase difference on the recording layer. In our primitive drive, the simple optical head shows good writing performance and the recorded marks present sub-micrometer size, which indicate the high possibility of the development of a new, inexpensive floppy system of above 500 MB data capacity.
| Original language | English |
|---|---|
| Pages (from-to) | 929-932 |
| Number of pages | 4 |
| Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 39 |
| Issue number | 2 B |
| Publication status | Published - 2000 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
- Physics and Astronomy(all)
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The development of a novel optical floppy disk drive using a phase change optical medium and a quasi-near-field optical head. / Kim, Young Joo; Hasegawa, Yutaka; Goto, Kenya.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 39, No. 2 B, 01.12.2000, p. 929-932.Research output: Contribution to journal › Article
TY - JOUR
T1 - The development of a novel optical floppy disk drive using a phase change optical medium and a quasi-near-field optical head
AU - Kim, Young Joo
AU - Hasegawa, Yutaka
AU - Goto, Kenya
PY - 2000/12/1
Y1 - 2000/12/1
N2 - The optical memory system still has some shortcomings such as slow tracking access speed and high fabrication cost due to its relatively heavy head weight and complex optical elements. To overcome these limitations, a new lensless optical floppy disk drive has been developed using a phase change optical floppy disk and an external cavity semiconductor laser with a good antireflection (AR) coaling on the emitting facet. The main components of this novel system are a contact-type head of quasi-near-field optics and a phase change medium prepared on a flexible polyimide substrate. The AR-coated semiconductor laser oscillates externally with the disk and its laser emission output shows sufficient variance to detect the phase difference on the recording layer. In our primitive drive, the simple optical head shows good writing performance and the recorded marks present sub-micrometer size, which indicate the high possibility of the development of a new, inexpensive floppy system of above 500 MB data capacity.
AB - The optical memory system still has some shortcomings such as slow tracking access speed and high fabrication cost due to its relatively heavy head weight and complex optical elements. To overcome these limitations, a new lensless optical floppy disk drive has been developed using a phase change optical floppy disk and an external cavity semiconductor laser with a good antireflection (AR) coaling on the emitting facet. The main components of this novel system are a contact-type head of quasi-near-field optics and a phase change medium prepared on a flexible polyimide substrate. The AR-coated semiconductor laser oscillates externally with the disk and its laser emission output shows sufficient variance to detect the phase difference on the recording layer. In our primitive drive, the simple optical head shows good writing performance and the recorded marks present sub-micrometer size, which indicate the high possibility of the development of a new, inexpensive floppy system of above 500 MB data capacity.
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M3 - Article
AN - SCOPUS:0033878338
VL - 39
SP - 929
EP - 932
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 2 B
ER -