Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier
Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier
复制标题
基于新型量子点半导体光放大器的扫频激光光学相干断层扫描光源的评估
DOI:
10.1117/12.889247
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Krstajic N
中科院分区:
文献类型:
--
作者:
Krstajic N
We describe a simple swept-laser design that characterizes the emission bandwidth, linewidth, spectral shape and output noise. A short cavity Littmann configuration is used in which the semiconductor optical amplifier (SOA) lasing wavelength is tuned by a galvanometer with an 830 grooves per mm diffraction grating. A 3dB coupler extracts light from the cavity formed by the grating and end-mirror and the optical output uses to illuminate a balanced swept source optical coherence tomography (SS-OCT) interferometer incorporating a circulator, 3dB coupler, dispersion compensator and balanced detector. The SOA (SOA-1200-70-PM-20sB, Innolume GmbH) uses a novel III-V semiconductor quantum-dot gain medium. ASE is emitted between 1150nm and 1300nm at a drive current of 700mA. When used in the Littmann cavity laser a coherence length of about 10mm is produced, which is tunable over 60nm. The peak output power is 12mW. The swept-laser has been incorporated into a fiber-based SS-OCT system and used to image biological tissues. Axial resolution in air is 12 microns. Images of human palmar skin in-vivo are demonstrated, showing good resolution and contrast, with the stratum corneum, epidermis, rete ridges and epidermal-dermal junction visualized.
DOI:
10.1007/978-3-540-77550-8_5
发表时间:
2008
期刊:
Antibiotics
影响因子:
--
作者:
J. Boer
通讯作者:
J. Boer
影响因子:
1.6
作者:
P. Judson;K. Groom;D. Childs;M. Hopkinson;R. Hogg
通讯作者:
R. Hogg
DOI:
10.1016/j.mejo.2008.06.037
发表时间:
2009
期刊:
Microelectron. J.
影响因子:
--
作者:
P. Judson;K. Groom;D. Childs;M. Hopkinson;N. Krstajić;R. Hogg
通讯作者:
R. Hogg