200 kHz swept light source equipped with KTN deflector for optical coherence tomography

200 kHz swept light source equipped with KTN deflector for optical coherence tomography

A new light source for swept-source optical coherence tomography (SS-OCT) is presented, by an external-cavity LD equipped with a KTN electro-optic deflector. The KTN deflector is unique in being very fast and simultaneously providing an appreciable deflection caused by injected carriers. Being free...

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Veröffentlicht in:Electronics letters 2012-02, Vol.48 (4), p.1-1
Hauptverfasser: Okabe, Y, Sasaki, Y, Ueno, M, Sakamoto, T, Toyoda, S, Yagi, S, Naganuma, K, Fujiura, K, Sakai, Y, Kobayashi, J, Omiya, K, Ohmi, M, Haruna, M
Format: Artikel
Sprache:eng
Schlagworte:
Deflectors
Electric potential
Fingers
Lasers
Light sources
Optical Coherence Tomography
Scanning
Voltage
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Zusammenfassung:A new light source for swept-source optical coherence tomography (SS-OCT) is presented, by an external-cavity LD equipped with a KTN electro-optic deflector. The KTN deflector is unique in being very fast and simultaneously providing an appreciable deflection caused by injected carriers. Being free from mechanical resonance, the 1.3 μm laser exhibits a scanning range of almost 80 nm up to 200 kHz with a ±400 V deflector driving voltage. Preliminary SS-OCT images of a human fingernail and finger skin have been obtained using the swept light source.
ISSN:0013-5194
1350-911X