Abstract
A cavity-SNOM (scanning near-field optical microscope) head using a laser diode is proposed and studied theoretically and experimentally. Theoretically, we study the optical properties using conventional rate equations. Several conditions to detect the SNOM signal with a photodiode are discussed. Experimentally, the dependence of output power of the laser diode on the injection current is measured. A sufficiently strong modulation signal is detected using a tapered fiber as the probe, but no modulation signal is detected using a tapered fiber with a small aperture (SNOM probe). The conditions for detecting a signal using a SNOM probe are also discussed, and we suggest that a laser diode with a SNOM probe fabricated on its facet is essential for realizing a practical cavity-SNOM head.
Original language | English |
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Pages (from-to) | 3759-3763 |
Number of pages | 5 |
Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
Volume | 37 |
Issue number | 6 SUPPL. B |
DOIs | |
Publication status | Published - 1998 Jun |
Externally published | Yes |
Keywords
- Cavity
- Laser diode
- Optical recording
- SNOM
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)