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We introduce a simple scheme for mode-density multiplication of an optical frequency comb (OFC) by a factor of square of an arbitrary integer N using phase modulation. This scheme is… Click to show full abstract
We introduce a simple scheme for mode-density multiplication of an optical frequency comb (OFC) by a factor of square of an arbitrary integer N using phase modulation. This scheme is employed to multiply the mode density of an erbium-doped fiber laser OFC (repetition rate of 66.87 MHz) by factors of 42, 82, and 3 ยท 42 using an electro-optic phase modulator. The OFC multiplied by 42 is applied to direct-comb spectroscopy of methane with a spectral resolution of 4.18 MHz.
Keywords:
density multiplication;
density;
optical frequency;
mode density;
multiplication optical;
comb
Journal Title: Optics express
Year Published: 2018
Link to full text (if available)
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Journal Title: Optics express
Year Published: 2018
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!