Publications by Anat Siddharth

Ultrafast Tunable Photonic Integrated Extended-DBR Pockels Laser

Tobias Kippenberg, Anat Siddharth, Zheru Qiu, Andrey Voloshin

Hybrid photonic integrated lasers have revolutionized laser technology by combining the scalable manufacturing of simple laser diodes with high-performance features such as frequency stability, opticallinewidth, and tuning linearity [1], traditionally only ...

IEEE2025

Low-noise, frequency-agile photonic integrated lasers

Anat Siddharth

Photonic integrated circuits (PICs) have revolutionized optical communication and precision metrology by enabling compact, scalable, and high-performance optical systems. However, conventional integrated laser sources suffer from limitations such as poor c ...

EPFL2025

Ultrafast tunable photonic-integrated extended-DBR Pockels laser

Tobias Kippenberg, Anat Siddharth, Zheru Qiu, Andrey Voloshin

Frequency-agile lasers that can simultaneously feature low noise characteristics and fast mode-hop-free frequency tuning are keystone components for applications ranging from LiDAR and distributed sensing to communication and quantum information processing ...

Nature Publishing Group2025

Piezo-Mems Tunable Ultra Low-Noise Laser

Tobias Kippenberg, Rui Ning Wang, Anat Siddharth, Andrea Bancora, Andrey Voloshin, Vladimir Shadymov

In this paper, we present the first ultra-low-noise, self-injection locked (SIL) laser with frequency agility based on the monolithic integration of a low-loss silicon nitride (Si3N4) photonic spiral cavity with an aluminum nitride (AlN) actuator. The self ...

IEEE2025

Tunable optical reflector chip for external cavity laser

Tobias Kippenberg, Anat Siddharth

An optical reflector chip (10) comprising a waveguide arrangement (11) configured to guide optical radiation and a modulation device (3). The waveguide arrangement (11) comprises a Bragg grating section (111), the Bragg grating section (111) comprising a p ...

2024

Frequency-agile Hybrid Integrated Laser at Sub-micron Spectral Range for Coherent Sensing and Quantum Applications

Tobias Kippenberg, Rui Ning Wang, Anat Siddharth

We demonstrate a hybrid integrated low-noise laser based on a 900 nm laser diode self-injection locked to a microresonator with MEMS actuators exhibiting a frequency actuation bandwidth >10 MHz and a tuning efficiency >30 MHz/V. ...

Institute of Electrical and Electronics Engineers Inc.2024

Piezoelectric actuation for integrated photonics

Tobias Kippenberg, Rui Ning Wang, Anat Siddharth, Viacheslav Snigirev, Andrea Bancora, Andrey Voloshin, Vladimir Shadymov

Recent decades have seen significant advancements in integrated photonics, driven by improvements in nanofabrication technology. This field has been developed from integrated semiconductor lasers and low-loss waveguides to optical modulators, enabling the ...

Optica Publishing Group2024

Sub-MHz linewidth, FMCW photonic integrated blue laser

Tobias Kippenberg, Anat Siddharth, Xinru Ji

We demonstrate for the first time a frequency-modulated continuous wave photonic integrated blue laser with sub-MHz linewidth. The laser exhibits frequency excursion greater than 900 MHz at up to 1 MHz triangular chirp rate with a nonlinearity of less than ...

Institute of Electrical and Electronics Engineers Inc.2024

Piezoelectrically tunable, narrow linewidth photonic integrated extended-DBR lasers

Tobias Kippenberg, Anat Siddharth, Zheru Qiu, Andrea Bancora, Junyin Zhang, Andrey Voloshin

Recent advancements in ultra-low-loss silicon nitride (Si3N4)-based photonic integrated circuits have surpassed fiber lasers in coherence and frequency agility. However, high manufacturing costs of DFB and precise control requirements, as required for self ...

Optica Publishing Group2024

Ultrafast Pockels-tunable hybrid integrated E-DBR laser

Tobias Kippenberg, Anat Siddharth, Zheru Qiu

We demonstrate a hybrid integrated frequency-agile laser based on an InP gain chip and an extended electro-optic Bragg waveguide reflector manufactured with a wafer-scale lithium niobate-on-insulator process featuring 10 GHz tuning range with high optical ...

Institute of Electrical and Electronics Engineers Inc.2024