Passive cavity surface-emitting lasers: option of temperature-insensitive lasing wavelength for uncooled dense wavelength division multiplexing systems

V. A. Shchukin; N. N. Ledentsov; T. Slight; W. Meredith; N. Yu. Gordeev; A. M. Nadtochy; A. S. Payusov; M. V. Maximov; S. A. Blokhin; A. A. Blokhin; Yu. M. Zadiranov; N. A. Maleev; V. M. Ustinov; K. D. Choquette

doi:10.1117/12.2208915

4 March 2016 Passive cavity surface-emitting lasers: option of temperature-insensitive lasing wavelength for uncooled dense wavelength division multiplexing systems

V. A. Shchukin, N. N. Ledentsov, T. Slight, W. Meredith, N. Yu. Gordeev, A. M. Nadtochy, A. S. Payusov, M. V. Maximov, S. A. Blokhin, A. A. Blokhin, Yu. M. Zadiranov, N. A. Maleev, V. M. Ustinov, K. D. Choquette

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Proceedings Volume 9766, Vertical-Cavity Surface-Emitting Lasers XX; 976609 (2016) https://doi.org/10.1117/12.2208915
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

A concept of passive cavity surface–emitting laser is proposed aimed to control the temperature shift of the lasing wavelength. The device contains an all–semiconductor bottom distributed Bragg reflector (DBR), in which the active medium is placed, a dielectric resonant cavity and a dielectric top DBR, wherein at least one of the dielectric materials has a negative temperature coefficient of the refractive index, dn/dT < 0. This is shown to be the case for commonly used dielectric systems SiO₂/TiO₂ and SiO₂/Ta₂O₅. Two SiO₂/TiO₂ resonant structures having a cavity either of SiO₂ or TiO₂ were deposited on a substrate, their optical power reflectance spectra were measured at various temperatures, and refractive index temperature coefficients were extracted, dn/dT = 0.0021 K^-1 for SiO₂ and dn/dT = –0.0092 K^-1 for TiO₂. Using such dielectric materials allows designing passive cavity surface–emitting lasers having on purpose either positive, or zero, or negative temperature shift of the lasing wavelength dλ/dT. A design for temperature–insensitive lasing wavelength (dλ/dT = 0) is proposed. Employing devices with temperature–insensitive lasing wavelength in wavelength division multiplexing systems may allow significant reducing of the spectral separation between transmission channels and an increase in number of channels for a defined spectral interval enabling low cost energy efficient uncooled devices.

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V. A. Shchukin, N. N. Ledentsov, T. Slight, W. Meredith, N. Yu. Gordeev, A. M. Nadtochy, A. S. Payusov, M. V. Maximov, S. A. Blokhin, A. A. Blokhin, Yu. M. Zadiranov, N. A. Maleev, V. M. Ustinov, and K. D. Choquette "Passive cavity surface-emitting lasers: option of temperature-insensitive lasing wavelength for uncooled dense wavelength division multiplexing systems", Proc. SPIE 9766, Vertical-Cavity Surface-Emitting Lasers XX, 976609 (4 March 2016); https://doi.org/10.1117/12.2208915

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