Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback

Samutpraphoot, Polnop; Weber, Sophie F.; Lin, Qian; Gangloff, Dorian; Bylinskii, Alexei; Braverman, Boris; Kawasaki, Akio; Raab, Christoph; Kaenders, Wilhelm; Vuletić, Vladan

doi:10.1364/oe.22.011592

Cited by 13 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the locking is fully engaged, including the fast feedback path, the laser stayed locked despite repeated impacts of the hammer on the table, briefly jumping in frequency before returning to its locked point. This is in contrast to earlier, piezoelectricstabilized designs [9,10], where even loud conversation or hand-clapping can cause the laser to fall out of lock.…”

Section: Laser Noise Measurementcontrasting

confidence: 61%

See 1 more Smart Citation

Robust kHz-linewidth distributed Bragg reflector laser with optoelectronic feedback

Yamoah¹,

Braverman²,

Pedrozo-Peñafiel³

et al. 2019

Opt. Express

Self Cite

View full text Add to dashboard Cite

We demonstrate a combination of optical and electronic feedback that significantly narrows the linewidth of distributed Bragg reflector lasers (DBRs). We use optical feedback from a long external fiber path to reduce the high-frequency noise of the laser. An electro-optic modulator placed inside the optical feedback path allows us to apply electronic feedback to the laser frequency with very large bandwidth, enabling robust and stable locking to a reference cavity that suppresses lowfrequency components of laser noise. The combination of optical and electronic feedback allows us to significantly lower the frequency noise power spectral density of the laser across all frequencies and narrow its linewidth from a free-running value of 1.1 MHz to a stabilized value of 1.9 kHz, limited by the detection system resolution. This approach enables the construction of robust lasers with sub-kHz linewidth based on DBRs across a broad range of wavelengths.

show abstract

Section: Laser Noise Measurementcontrasting

confidence: 61%

“…Such an external cavity increases the optical quality factor Q due to greater cavity length or finesse compared to an integrated cavity [7]. Optical feedback from an external fiber [8] has contributed to sub-kilohertz linewidth narrowing in DBR lasers [9] and traditional ECDLs [10] by adding a ∼ 1 m long external cavity to the laser.…”

Section: Introductionmentioning

confidence: 99%

Robust kHz-linewidth distributed Bragg reflector laser with optoelectronic feedback

Yamoah¹,

Braverman²,

Pedrozo-Peñafiel³

et al. 2019

Opt. Express

Self Cite

View full text Add to dashboard Cite

show abstract

“…Savchenkov et al [22] have reported a similar value (≈ 30 kHz) for self-injection locked LD at 370 nm. ECDL frequency stabilizations based on external cavity optical feedback [8,23] allow to narrow the linewidth down to few kHz but the large external cavity (meter long) and moving parts limit the observation time from minutes to seconds. To reach stable SF operation, a careful consideration should be given to the setup.…”

Section: Arxiv:210204129v1 [Physicsoptics] 8 Feb 2021mentioning

confidence: 99%

Narrow linewidth near-UV InGaN laser diode based on external cavity fiber Bragg grating

et al. 2021

View full text Add to dashboard Cite

We realize a fiber Bragg grating InGaN based laser diode emitting at 400 nm and demonstrate its high coherency. Thanks to the fabrication of a narrow band fiber Bragg grating in the near-UV, we can reach single-mode and single-frequency regimes for the selfinjection locked diode. The device exhibits 44 dB sidemode-suppression-ratio and mW output power. Detailed frequency noise analysis reveals sub-MHz integrated linewidth and 16 kHz intrinsic linewidth. Such a narrow linewidth laser diode in the near-UV domain with a compact and low-cost design could find applications whenever coherency and interferometric resolutions are needed.

show abstract

“…There are different noise sources, which can affect on the laser's linewidth: (1) fundamental noises (white, shot, and thermal noises): the intrinsic Lorentzian linewidth can be reduced using optical feedback 44 and (2) flicker (1∕f) noises and technical noises (noises from the laser driver, piezo drift, mechanical vibrations, temperature fluctuations, acoustic noises, air pressure fluctuations). These noise sources broaden the laser linewidth.…”

Section: Frequency Stabilizationmentioning

confidence: 99%

Breath analysis using external cavity diode lasers: a review

Bayrakli

2017

J. Biomed. Opt

View full text Add to dashboard Cite

Most techniques that are used for diagnosis and therapy of diseases are invasive. Reliable noninvasive methods are always needed for the comfort of patients. Owing to its noninvasiveness, ease of use, and easy repeatability, exhaled breath analysis is a very good candidate for this purpose. Breath analysis can be performed using different techniques, such as gas chromatography mass spectrometry (MS), proton transfer reaction-MS, and selected ion flow tube-MS. However, these devices are bulky and require complicated procedures for sample collection and preconcentration. Therefore, these are not practical for routine applications in hospitals. Laser-based techniques with small size, robustness, low cost, low response time, accuracy, precision, high sensitivity, selectivity, low detection limit, real-time, and point-of-care detection have a great potential for routine use in hospitals. In this review paper, the recent advances in the fields of external cavity lasers and breath analysis for detection of diseases are presented.

show abstract

Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback

Cited by 13 publications

References 19 publications

Robust kHz-linewidth distributed Bragg reflector laser with optoelectronic feedback

Robust kHz-linewidth distributed Bragg reflector laser with optoelectronic feedback

Narrow linewidth near-UV InGaN laser diode based on external cavity fiber Bragg grating

Breath analysis using external cavity diode lasers: a review

Contact Info

Product

Resources

About