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<title>A compact frequency comb with TV-Rb clock and ultrabroadband femtosecond Ti:sapphire laser for difference frequency generation</title>

2006; SPIE; Linguagem: Inglês

10.1117/12.693423

1996-756X

Heung Nam Han, Zhiyi Wei, Jingrong Tian, Wei Zhang, Yanying Zhao, Tong Juan-Juan, Naicheng Shen, DONG TAI-QIAN, Yuxin Nie,

Photonic and Optical Devices

We report the experimental research on the measurement and controlling of carrier envelope phase offset (CEO) with a home-made femtosecond Ti:sapphire laser, the beat frequency with a signal to noise ratio of as high as 45 dB is obtained with standard self-referencing technique. Locking the beat signal to the TV-Rb frequency standard by a phase-locked loop electronic circuit, a simple compact frequency comb was established. To further control the CEO with the technology of differenced frequency generation, we develop an ultra-broadened bandwidth femtosecond Ti:sapphire laser by balancing the dispersion with chirped mirrors, spectrum of covering from 600 nm to 1050 nm was observed. It will enable us to measure and control the CEO without photonic crystal fiber.