Time stretch dispersive Fourier transform based single-shot pulse-by-pulse spectrum measurement using a pulse-repetition-frequency-variable gain-switched laser

Hideaki Furukawa; Takeshi Makino; Xiaomin Wang; Tetsuya Kobayashi; Mohammad H. Asghari; Paul Trinh; Bahram Jalali; Wai Sing Man; Kwong Shing Tsang; Naoya Wada

doi:10.1117/12.2289366

15 February 2018 Time stretch dispersive Fourier transform based single-shot pulse-by-pulse spectrum measurement using a pulse-repetition-frequency-variable gain-switched laser

Hideaki Furukawa, Takeshi Makino, Xiaomin Wang, Tetsuya Kobayashi, Mohammad H. Asghari, Paul Trinh, Bahram Jalali, Wai Sing Man, Kwong Shing Tsang, Naoya Wada

Author Affiliations +

Proceedings Volume 10517, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications III; 1051709 (2018) https://doi.org/10.1117/12.2289366
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

The time stretch dispersive Fourier Transform (TS-DFT) technique based on a fiber chromatic dispersion is a powerful tool for pulse-by-pulse single-shot spectrum measurement for highrepetition rate optical pulses. The distributed feedback laser diode (DFB-LD) with the gain switch operation can flexibly change the pulse repetition frequency (PRF). In this paper, we newly introduce a semiconductor gain-switched DFB-LD operating from 1 MHz up to 1 GHz PRF into the TS-DFT based spectrum measurement system to improve the flexibility and the operability. The pulse width can be below 2 ps with a pulse compression technique. We successfully measure the spectrum of each optical pulse at 1 GHz, 100 MHz, and 10 MHz PRF, and demonstrate the flexibility of the measurement system.

Citation Download Citation

Hideaki Furukawa, Takeshi Makino, Xiaomin Wang, Tetsuya Kobayashi, Mohammad H. Asghari, Paul Trinh, Bahram Jalali, Wai Sing Man, Kwong Shing Tsang, and Naoya Wada "Time stretch dispersive Fourier transform based single-shot pulse-by-pulse spectrum measurement using a pulse-repetition-frequency-variable gain-switched laser", Proc. SPIE 10517, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications III, 1051709 (15 February 2018); https://doi.org/10.1117/12.2289366

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