Generation of terahertz optical beating from a simultaneously self-mode-locked Nd:YAG laser at 1064 and 1123 nm

C. L. Sung, C. Y. Lee, C. C. Chang, H. C. Liang, Yung-Fu Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The reflectivity of the output coupler is designed to achieve the synchronously self-mode-locked operation at 1064 and 1123 nm in a diode-end-pumped Nd:YAG laser. Numerical analyses are performed to confirm that the designed output coupler can lead the emission lines to be predominant at 1064 and 1123 nm. Moreover, the crossover of the threshold pump powers for the 1064 and 1123 nm emission lines can be exploited to obtain the single central wavelength of 1064 nm or the single central wavelength of 1123 nm or, simultaneously, dual-central-wavelength self-mode-locked operation by finely adjusting the cavity alignment. For the dual-central-wavelength mode-locked emissions, the pulse repetition rate and the pulse duration are 4.5 GHz and 50.8 ps, respectively. The maximum output power can be up to 2.47 W at a pump power of 7.5 W. The synchronization of the 1064 and 1123 nm mode-locked pulses generates the optical beating pulse trains with repetition rates up to 14.7 THz.

Original languageEnglish
Pages (from-to)302-305
Number of pages4
JournalOptics Letters
Volume42
Issue number2
DOIs
StatePublished - 15 Jan 2017

Keywords

  • DUAL-WAVELENGTH EMISSION
  • TI-SAPPHIRE LASER
  • 1.06 MU-M
  • REPETITION-RATE
  • PULSE-TRAIN
  • LOCKING
  • FIBER
  • OPERATION
  • CAVITY
  • SIGNAL

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