Journal: Biomedical Optics Express

Article Title: Doppler velocity detection limitations in spectrometer-based versus swept-source optical coherence tomography

doi: 10.1364/BOE.2.002175

Figure Lengend Snippet: Theoretical predictions for velocity limitations of swept-source and spectrometer-based Doppler OCT systems. The minimum velocity and wrapping velocity are the same for both systems. The spectrometer-based washout velocity equals the wrapping velocity, but the washout limit is several orders of magnitude greater for the swept-source system.

Article Snippet: The spectrometer-based system consisted of a broadband source (SuperLum, λ 0 = 830 nm, Δλ = 60 nm) and custom spectrometer (Basler, 100 kHz line rate, 87% duty cycle, 2048 pixels).

Techniques:

Journal: Biomedical Optics Express

Article Title: Doppler velocity detection limitations in spectrometer-based versus swept-source optical coherence tomography

doi: 10.1364/BOE.2.002175

Figure Lengend Snippet: Summary of Doppler OCT velocity detection limits

Article Snippet: The spectrometer-based system consisted of a broadband source (SuperLum, λ 0 = 830 nm, Δλ = 60 nm) and custom spectrometer (Basler, 100 kHz line rate, 87% duty cycle, 2048 pixels).

Techniques: Expressing

Journal: Biomedical Optics Express

Article Title: Doppler velocity detection limitations in spectrometer-based versus swept-source optical coherence tomography

doi: 10.1364/BOE.2.002175

Figure Lengend Snippet: Schematics of spectrometer-based and swept-source systems used in the comparative Doppler phantom experiments. (A) 830 nm spectrometer design using a linescan CCD camera. (B) 1040 nm swept-source system using a balanced detection configuration. FBG: Fiber Bragg grating.

Article Snippet: The spectrometer-based system consisted of a broadband source (SuperLum, λ 0 = 830 nm, Δλ = 60 nm) and custom spectrometer (Basler, 100 kHz line rate, 87% duty cycle, 2048 pixels).

Techniques:

Journal: Biomedical Optics Express

Article Title: Doppler velocity detection limitations in spectrometer-based versus swept-source optical coherence tomography

doi: 10.1364/BOE.2.002175

Figure Lengend Snippet: Doppler phantom experiment results comparing flow velocity as measured using both systems described in . (A) Plot of measured velocities normalized to the theoretical wrapping velocity of each system. Blue coded data points show measured maximum velocities before phase unwrapping. Black coded data points show maximum velocities measured after phase unwrapping. (B) Cross-sectional magnitude and Doppler images with 100 kHz acquisition rates from both spectrometer-based and swept-source systems acquired at different flow velocities. The spectrometer-based system shows significant washout effects when V′ = 1 while the swept-source data remains robust even at velocities 11 times the v wrap limit.

Article Snippet: The spectrometer-based system consisted of a broadband source (SuperLum, λ 0 = 830 nm, Δλ = 60 nm) and custom spectrometer (Basler, 100 kHz line rate, 87% duty cycle, 2048 pixels).

Techniques: