Results 41 to 50 of about 80,084 (309)

Optical fiber sensing based on reflection laser spectroscopy [PDF]

, 2010
An overview on high-resolution and fast interrogation of optical-fiber sensors relying on laser reflection spectroscopy is given. Fiber Bragg-gratings (FBGs) and FBG resonators built in fibers of different types are used for strain, temperature and ...
De Natale, Paolo, Ralph P. Tatam, Chow, Jong H., Jong H. Chow, Mario Salza, Ballard, Nicholas, Gangopadhyay, Tarun, Paz-Soldan, Daniel, Tatam, Ralph, Ferarro, Pietro, Lam, Timothy T. -Y., Lam, Timothy T-Y, Gianluca Gagliardi, Barnes, Jack A., Daniel Paz-Soldan, Gangopadhyay, Tarun Kumar, Tatam, Ralph P., Chow, Jong, Pietro Ferraro, Tarun K. Gangopadhyay, Jack A. Barnes, Loock, Hans-Peter, Edmond Chehura, Paolo De Natale, Gangopadhyay, Tarun K., Salza, Mario, Ferraro, Pietro, Hans-Peter Loock, Nicholas Ballard, Barnes, Jack, Chehura, Edmon, Gagliardi, Gianluca, Timothy T.-Y. Lam, Lam, Timothy, Chehura, Edmond   +34 more
core   +1 more source

Weak-Light Phase-Locking Time Delay Interferometry with Optical Frequency Combs

Sensors, 2022
In the future space-borne gravitational wave (GW) detector, the optical transponder scheme, i.e., the phase-locking scheme, will be utilized so as to maintain the signal-to-noise ratio (SNR).
Mingyang Xu, Hanzhong Wu, Yurong Liang, Dan Luo, Panpan Wang, Yujie Tan, Chenggang Shao   +6 more
doaj   +1 more source

The relative intensity noise of a vertical-cavity surface-emitting laser with a fiber Bragg grating external cavity [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2021
The research deals with the topical problem of stabilizing the optical parameters of a single-mode vertical-cavity surfaceemitting laser. A solution to the problem is proposed by forming an external cavity based on a Bragg grating induced into an optical
Vladimir A. Shulepov, Stanislav M. Aksarin, Vladimir E. Strigalev   +2 more
doaj   +1 more source

Cavity Optomechanics with High Stress Silicon Nitride Films [PDF]

, 2012
There has been a barrage of interest in recent years to marry the fields of nanomechanics and quantum optics. Mechanical systems provide sensitive and scalable architectures for sensing applications ranging from atomic force microscopy to gravity wave ...
Wilson, Dalziel Joseph
core   +1 more source

Algorithm based comparison between the integral method and harmonic analysis of the timing jitter of diode-based and solid-state pulsed laser sources

, 2015
A comparison between two methods of timing jitter calculation is presented. The integral method utilizes spectral area of the single side-band (SSB) phase noise spectrum to calculate root mean square (rms) timing jitter. In contrast the harmonic analysis
Edwards, T. J., Su, C.-R., Brown, C. T A, Su, C. R., Edwards, T.J., Metzger, N. K., Brown, C.T.A., Metzger, N.K.   +7 more
core   +1 more source

Comparative analysis of the DFB fiber laser and fiber-optic interferometric strain sensors

, 2007
The DFB fiber laser strain sensor is shown to provide an improvement in the minimum detectable length change by a factor of 275 at 2 kHz for an applied strain when compared with an interferometric sensor interrogated by at equivalent DFB laser.
C. K. Kirkendall, G. M. H. Flockhart, Kirkendall, C. K., Cranch, G. A., G. A. Cranch, Flockhart, G. M. H.   +5 more
core   +1 more source

Modeling and comparison of residual laser noise in geometric TDI combinations with onboard optical delays

Frontiers in Astronomy and Space Sciences
Time-Delay Interferometry (TDI) is the main method for reducing laser phase noise in space-based gravitational wave detection. In addition to inter-spacecraft signal delays, onboard optical delays within each spacecraft, including the local, adjacent ...
Wan-Qi Yang, Pan-Pan Wang, Xin-Lei Zhao, Zi-Jiang Yang, Cheng-Gang Shao   +4 more
doaj   +1 more source

Linewidth and phase noise characteristics of DFB fibre lasers

, 2004
The anomalous linewidth behavior in a DFB fiber laser is investigated. It is shown that not only does the linewidth deviate drastically from the Schawlow-Townes linewidth formula by increasing with pump and laser power, but it also varies significantly ...
Voo, N.Y., Horak, P., Morten Ibsen, N. Y. Voo, Ibsen, M., Peter Horak, Wei H. Loh, Loh, W.H.   +7 more
core   +1 more source

Application of a liquid crystal spatial light modulator to laser marking [PDF]

, 2011
Laser marking is demonstrated using a nanosecond (ns) pulse duration laser in combination with a liquid crystal spatial light modulator to generate two-dimensional patterns directly onto thin films and bulk metal surfaces.
Rainer J. Beck, Jonathan D. Shephard, Parry, Jonathan P., Hand, Duncan P.; id_orcid, Beck, Rainer J, Jonathan P. Parry, Duncan P. Hand, Shephard, Jonathan D.; id_orcid   +7 more
core   +1 more source

Laser Phase Noise Compensation Method Based on Dual Reference Channels in Inverse Synthetic Aperture Lidar

Remote Sensing
Laser phase noise is a critical factor that limits the range and performance of coherent lidar systems, especially in high-resolution applications such as inverse synthetic aperture lidar (ISAL), which demands stringent coherence.
Dengfeng Liu, Chen Xu, Yutang Li, Anpeng Song, Jian Li, Kai Jin, Xi Luo, Kai Wei   +7 more
doaj   +1 more source