Broadband MEMS-tunable high-index-contrast subwavelength grating long-wavelength VCSEL

Il-Sug Chung, Vladimir Iakovlev, Alexei Sirbu, Alexandru Mereuta, Eli Kapon, Andrei Caliman, Jesper Mørk

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A widely-tunable single-mode 1.3 μm vertical-cavity surface-emitting laser structure incorporating a microelectromechanical system-tunable high-index-contrast subwavelength grating (HCG) mirror is suggested and numerically investigated. A linear tuning range of 100 nm and a wavelength tuning efficiency of 0.203 are predicted. The large tuning range and efficiency are attributed to the incorporation of the tuning air gap as part of the optical cavity and to the use of a short cavity structure. The short cavity length can be achieved by employing a HCG design of which the reflection mechanism does not rely on resonant coupling. The absence of resonance coupling leads to a 0.59 λ-thick penetration depth of the HCG and enables to use a 0.25 λ-thick tuning air gap underneath the HCG. This considerably reduces the effective cavity length, leading to larger tuning range and efficiency. The basic properties of this new structure are analyzed, and shown to be explained by analytical expressions that are derived in the paper. In this context, the penetration depth of the HCG is introduced and shown to be an important characteristic length scale. Throughout the tuning wavelength range, strong single mode operation was maintained and uniform output power is expected.
Original languageEnglish
JournalI E E E Journal of Quantum Electronics
Volume46
Issue number9
Pages (from-to)1245-1253
ISSN0018-9197
DOIs
Publication statusPublished - 2010

Cite this

Chung, Il-Sug ; Iakovlev, Vladimir ; Sirbu, Alexei ; Mereuta, Alexandru ; Kapon, Eli ; Caliman, Andrei ; Mørk, Jesper. / Broadband MEMS-tunable high-index-contrast subwavelength grating long-wavelength VCSEL. In: I E E E Journal of Quantum Electronics. 2010 ; Vol. 46, No. 9. pp. 1245-1253.
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title = "Broadband MEMS-tunable high-index-contrast subwavelength grating long-wavelength VCSEL",
abstract = "A widely-tunable single-mode 1.3 μm vertical-cavity surface-emitting laser structure incorporating a microelectromechanical system-tunable high-index-contrast subwavelength grating (HCG) mirror is suggested and numerically investigated. A linear tuning range of 100 nm and a wavelength tuning efficiency of 0.203 are predicted. The large tuning range and efficiency are attributed to the incorporation of the tuning air gap as part of the optical cavity and to the use of a short cavity structure. The short cavity length can be achieved by employing a HCG design of which the reflection mechanism does not rely on resonant coupling. The absence of resonance coupling leads to a 0.59 λ-thick penetration depth of the HCG and enables to use a 0.25 λ-thick tuning air gap underneath the HCG. This considerably reduces the effective cavity length, leading to larger tuning range and efficiency. The basic properties of this new structure are analyzed, and shown to be explained by analytical expressions that are derived in the paper. In this context, the penetration depth of the HCG is introduced and shown to be an important characteristic length scale. Throughout the tuning wavelength range, strong single mode operation was maintained and uniform output power is expected.",
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Broadband MEMS-tunable high-index-contrast subwavelength grating long-wavelength VCSEL. / Chung, Il-Sug; Iakovlev, Vladimir; Sirbu, Alexei; Mereuta, Alexandru; Kapon, Eli; Caliman, Andrei; Mørk, Jesper.

In: I E E E Journal of Quantum Electronics, Vol. 46, No. 9, 2010, p. 1245-1253.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Broadband MEMS-tunable high-index-contrast subwavelength grating long-wavelength VCSEL

AU - Chung, Il-Sug

AU - Iakovlev, Vladimir

AU - Sirbu, Alexei

AU - Mereuta, Alexandru

AU - Kapon, Eli

AU - Caliman, Andrei

AU - Mørk, Jesper

PY - 2010

Y1 - 2010

N2 - A widely-tunable single-mode 1.3 μm vertical-cavity surface-emitting laser structure incorporating a microelectromechanical system-tunable high-index-contrast subwavelength grating (HCG) mirror is suggested and numerically investigated. A linear tuning range of 100 nm and a wavelength tuning efficiency of 0.203 are predicted. The large tuning range and efficiency are attributed to the incorporation of the tuning air gap as part of the optical cavity and to the use of a short cavity structure. The short cavity length can be achieved by employing a HCG design of which the reflection mechanism does not rely on resonant coupling. The absence of resonance coupling leads to a 0.59 λ-thick penetration depth of the HCG and enables to use a 0.25 λ-thick tuning air gap underneath the HCG. This considerably reduces the effective cavity length, leading to larger tuning range and efficiency. The basic properties of this new structure are analyzed, and shown to be explained by analytical expressions that are derived in the paper. In this context, the penetration depth of the HCG is introduced and shown to be an important characteristic length scale. Throughout the tuning wavelength range, strong single mode operation was maintained and uniform output power is expected.

AB - A widely-tunable single-mode 1.3 μm vertical-cavity surface-emitting laser structure incorporating a microelectromechanical system-tunable high-index-contrast subwavelength grating (HCG) mirror is suggested and numerically investigated. A linear tuning range of 100 nm and a wavelength tuning efficiency of 0.203 are predicted. The large tuning range and efficiency are attributed to the incorporation of the tuning air gap as part of the optical cavity and to the use of a short cavity structure. The short cavity length can be achieved by employing a HCG design of which the reflection mechanism does not rely on resonant coupling. The absence of resonance coupling leads to a 0.59 λ-thick penetration depth of the HCG and enables to use a 0.25 λ-thick tuning air gap underneath the HCG. This considerably reduces the effective cavity length, leading to larger tuning range and efficiency. The basic properties of this new structure are analyzed, and shown to be explained by analytical expressions that are derived in the paper. In this context, the penetration depth of the HCG is introduced and shown to be an important characteristic length scale. Throughout the tuning wavelength range, strong single mode operation was maintained and uniform output power is expected.

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