The advantage of using a diode laser instead of a Q-switched laser in photoacoustic imaging of tissues

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Hosseini Motlagh Seyedeh Nasrin; Farmani Zahra; Mokhtari Mahboobeh

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Journal: Journal of Radiation Safety and Measurement Year:2020 | Volume:8 | Issue:2 (supplement) Page(s): 41-46

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Title

The advantage of using a diode laser instead of a Q-switched laser in photoacoustic imaging of tissues

Author(s)

Hosseini Motlagh Seyedeh Nasrin | Farmani Zahra | Mokhtari Mahboobeh | Issue Writer Certificate

Keywords

diode laserQ1

switchingQ1

tissueQ1

acousticQ1

Abstract

Photoacoustic (PA) imaging of biological tissues using laser diodes instead of conventional Q switched pulsed systems provides an attractive alternative for biomedical applications. However, the relatively low energy of laser diodes operating in the pulsed regime, results in generation of very weak acoustic waves, and low signal-to-noise ratio (SNR) of the detected signals. This problem can be addressed if optical excitation is modulated using custom waveforms and correlation processing is employed to increase SNR through signal compression. This work investigates the effect of the parameters of the modulation waveform on the resulting correlation signal and offers a practical for optimizing PA signal detection. The advantage of coherent signal averaging is demonstrated using theoretical analysis and a numerical model of PA generation. It was shown that an additional 5– 10dB of SNR can be gained through waveform engineering by adjusting the parameters and proﬁ le of optical modulation waveforms. Also diode lasers are also more intense and have more power output Therefore, the data can be combined quickly and provide more precise control and are absorbed by the pigment cells such as hemoglobin, because of their proximity to the infrared spectrum. And due to the presence of blood flow throughout the body, it is very useful in the treatment of diseases.

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APA: Copy

Hosseini Motlagh, Seyedeh Nasrin, Farmani, Zahra, & Mokhtari, Mahboobeh. (2020). The advantage of using a diode laser instead of a Q-switched laser in photoacoustic imaging of tissues. IRANIAN JOURNAL OF RADIATION SAFETY AND MEASUREMENT, 8(2 (supplement) ), 41-46. SID. https://sid.ir/paper/392077/en

Vancouver: Copy

Hosseini Motlagh Seyedeh Nasrin, Farmani Zahra, Mokhtari Mahboobeh. The advantage of using a diode laser instead of a Q-switched laser in photoacoustic imaging of tissues. IRANIAN JOURNAL OF RADIATION SAFETY AND MEASUREMENT[Internet]. 2020;8(2 (supplement) ):41-46. Available from: https://sid.ir/paper/392077/en

IEEE: Copy

Seyedeh Nasrin Hosseini Motlagh, Zahra Farmani, and Mahboobeh Mokhtari, “The advantage of using a diode laser instead of a Q-switched laser in photoacoustic imaging of tissues,” IRANIAN JOURNAL OF RADIATION SAFETY AND MEASUREMENT, vol. 8, no. 2 (supplement) , pp. 41–46, 2020, [Online]. Available: https://sid.ir/paper/392077/en

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