Stable operation of all polarization maintaining optical frequency comb based on Er-doped fiber laser with carbon nanotube

2017 ◽  
Author(s):  
H. Togashi ◽  
L. Jin ◽  
Y. Sakakibara ◽  
E. Omoda ◽  
H. Kataura ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Fiber Laser ◽  
Frequency Comb ◽  
Optical Frequency Comb ◽  
Stable Operation ◽  
Optical Frequency ◽  
Polarization Maintaining ◽  
Er Doped

scholarly journals Tunable optical frequency comb from a compact and robust Er:fiber laser

2020 ◽  
Vol 8 ◽  
Author(s):  
Zhiwei Zhu ◽  
Yang Liu ◽  
Daping Luo ◽  
Chenglin Gu ◽  
Lian Zhou ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Repetition Rate ◽  
Frequency Comb ◽  
Frequency Characteristics ◽  
Optical Frequency Comb ◽  
Precision Measurements ◽  
Optical Frequency ◽  
Residual Phase ◽  
Polarization Maintaining ◽  
Er Doped

We report on a compact and robust self-referenced optical frequency comb with a tunable repetition rate, generated by an all-polarization-maintaining (PM) mode-locked Er-doped fiber laser. The spacing between comb teeth can be tuned above 300 kHz at a repetition rate of 101 MHz. The repetition rate and the carrier–envelope offset of the laser are stabilized separately, and the relative residual phase noises are determined to be $336~\unicode[STIX]{x03BC}\text{rad}$ and 713 mrad (1 Hz–1 MHz). The accurate frequency characteristics and the stable structure show great potential for the use of such a comb in applications of precision measurements.

Study on high coupling efficiency Er-doped fiber laser for femtosecond optical frequency comb

Laser Physics ◽  
2016 ◽  
Vol 26 (9) ◽  
pp. 095102 ◽  
Author(s):  
Lihui Pang ◽  
Wenjun Liu ◽  
Hainian Han ◽  
Zhiyi Wei
Keyword(s):  
Fiber Laser ◽  
Frequency Comb ◽  
Coupling Efficiency ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Er Doped

All polarization-maintaining Er:fiber-based optical frequency comb for frequency comparison of optical clocks

2021 ◽  
Author(s):  
Zhang Pan ◽  
Zhang Yan-Yan ◽  
Li Ming-Kun ◽  
Rao Bing-Jie ◽  
Yan Lu-Lu ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Signal To Noise Ratio ◽  
Frequency Instability ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Thermal Drift ◽  
Signal To Noise ◽  
Frequency Comparison ◽  
Polarization Maintaining

Abstract In this research, we demonstrate an optical frequency comb (OFC) based on a turnkey mode-locked laser with a figure-9 structure and polarization-maintaining fibers for frequency comparison between optical clocks with wavelengths of 698 nm, 729 nm, 1068 nm and 1156 nm. We adopt a multi-branch approach in order to produce high power OFC signals at these specific wavelengths, enabling the signal-to-noise ratio of the beatnotes between the OFC and the clock lasers beyond 30 dB at a resolution bandwidth of 300 kHz. This approach makes the supercontinuum spectra generating process much easier in comparison to a single branch OFC; however, more out-of-loop fibers degrade the long term frequency instability due to thermal drift. To minimize the thermal drift effect, we set the fiber lengths of different branches to be similar, and we stabilize the temperature as well. The out-of-loop frequency instability of the OFC due to the incoherence of the multi-branch is about 5.5×10-19 @ 4000 s, while the in-loop frequency instability of f ceo and that of f beat are 7.5×10-18 @1 s and 8.5×10-18 @1 s, respectively. The turnkey OFC meets the requirement of frequency comparison between the best optical clocks.

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