1.7 THz tuning range pivot-point-independent mode-hop-free external cavity diode laser

Jiuyuan Zhu; Dun Qiao; Adam Jones; Bo  Zhang; Kang Li; Nigel Copner

doi:10.1364/OE.478580

1.7 THz tuning range pivot-point-independent mode-hop-free external cavity diode laser

Jiuyuan Zhu, Dun Qiao, Adam Jones, Bo Zhang, Kang Li, Nigel Copner

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Abstract

A novel mode-hope-free (MHF) tunable external cavity diode laser (ECDL) is demonstrated without mechanical pivot-point tuning. By corotating a periscope with an etalon and a narrow band pass (NBP) filter inside an external cavity, the cavity single longitudinal mode selection can be maintained, and continuous tuning can be achieved with optimal synchronization. A MHF continuous tuning range of 1.7 THz has been achieved with a semiconductor gain chip at the wavelength of 652±2 nm experimentally, and the theoretical tuning range can reach over 4.8 THz. The laser linewidth is estimated to be less than 1 MHz (FWHM) by a scanning Fabry-Perot (F-P) and a Michelson interferometer. 1 mW output power with variation of less than 10% in the tuning region of roughly 1.7 THz has been demonstrated

Original language	English
Article number	3970
Pages (from-to)	3970-3983
Number of pages	14
Journal	Optics Express
Volume	31
Issue number	3
Early online date	19 Jan 2023
DOIs	https://doi.org/10.1364/OE.478580
Publication status	Published - 30 Jan 2023

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title = "1.7 THz tuning range pivot-point-independent mode-hop-free external cavity diode laser",

abstract = "A novel mode-hope-free (MHF) tunable external cavity diode laser (ECDL) is demonstrated without mechanical pivot-point tuning. By corotating a periscope with an etalon and a narrow band pass (NBP) filter inside an external cavity, the cavity single longitudinal mode selection can be maintained, and continuous tuning can be achieved with optimal synchronization. A MHF continuous tuning range of 1.7 THz has been achieved with a semiconductor gain chip at the wavelength of 652±2 nm experimentally, and the theoretical tuning range can reach over 4.8 THz. The laser linewidth is estimated to be less than 1 MHz (FWHM) by a scanning Fabry-Perot (F-P) and a Michelson interferometer. 1 mW output power with variation of less than 10% in the tuning region of roughly 1.7 THz has been demonstrated",

author = "Jiuyuan Zhu and Dun Qiao and Adam Jones and Bo Zhang and Kang Li and Nigel Copner",

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doi = "10.1364/OE.478580",

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T1 - 1.7 THz tuning range pivot-point-independent mode-hop-free external cavity diode laser

AU - Zhu, Jiuyuan

AU - Qiao, Dun

AU - Jones, Adam

AU - Zhang, Bo

AU - Li, Kang

AU - Copner, Nigel

PY - 2023/1/30

Y1 - 2023/1/30

N2 - A novel mode-hope-free (MHF) tunable external cavity diode laser (ECDL) is demonstrated without mechanical pivot-point tuning. By corotating a periscope with an etalon and a narrow band pass (NBP) filter inside an external cavity, the cavity single longitudinal mode selection can be maintained, and continuous tuning can be achieved with optimal synchronization. A MHF continuous tuning range of 1.7 THz has been achieved with a semiconductor gain chip at the wavelength of 652±2 nm experimentally, and the theoretical tuning range can reach over 4.8 THz. The laser linewidth is estimated to be less than 1 MHz (FWHM) by a scanning Fabry-Perot (F-P) and a Michelson interferometer. 1 mW output power with variation of less than 10% in the tuning region of roughly 1.7 THz has been demonstrated

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DO - 10.1364/OE.478580

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1.7 THz tuning range pivot-point-independent mode-hop-free external cavity diode laser

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