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Year Number of Results
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Page 1
Bow-and-arrow sign on point-of-care ultrasound for diagnosis of pacemaker lead-induced heart perforation: A case report and literature review.
Chen N, Miao GX, Peng LQ, Li YH, Gu J, He Y, Chen T, Fu XY, Xing ZX. Chen N, et al. World J Clin Cases. 2023 Mar 6;11(7):1615-1626. doi: 10.12998/wjcc.v11.i7.1615. World J Clin Cases. 2023. PMID: 36926400 Free PMC article.
Given the persistent drainage of pericardial bleeding, urgent off-pump open chest surgery was performed to repair the perforation. ...CONCLUSION: POCUS enables the early diagnosis of pacemaker lead perforation at the bedside. A step-wise ultrasonographic approach and the " …
Given the persistent drainage of pericardial bleeding, urgent off-pump open chest surgery was performed to repair the perforation. .. …
Transverse-pumping approach for a powerful single-mode Ti:sapphire laser for near infrared lidar applications.
Vogelmann H, Speidel J, Perfahl M, Trickl T. Vogelmann H, et al. Appl Opt. 2022 Oct 10;61(29):8553-8562. doi: 10.1364/AO.463257. Appl Opt. 2022. PMID: 36255987
We present a design of a transversely pumped and powerful Ti:sapphire laser, suitable for laser remote sensing in the near infrared (NIR) spectrum. Examining multiple pump configurations revealed that transversal pumping of Ti:sapphire crystals with a Nd:YAG laser (532 nm) …
We present a design of a transversely pumped and powerful Ti:sapphire laser, suitable for laser remote sensing in the near infrared (NIR) sp …
Cavity-enhanced sum-frequency generation of blue light with near-unity conversion efficiency.
Kerdoncuff H, Christensen JB, Brasil TB, Novikov VA, Polzik ES, Hald J, Lassen M. Kerdoncuff H, et al. Opt Express. 2020 Feb 3;28(3):3975-3984. doi: 10.1364/OE.385826. Opt Express. 2020. PMID: 32122057 Free article.
The system consists of a 10-mm-long periodically poled KTP crystal placed in a double-resonant bow-tie cavity and pumped by a fiber laser at 1064.5 nm and a Ti:sapphire laser at 849.2 nm. ...This can however be expanded to cover the entire blue spectrum (420 nm to 510 nm) …
The system consists of a 10-mm-long periodically poled KTP crystal placed in a double-resonant bow-tie cavity and pumped by a fiber l …
Frequency Comb Generation via Cascaded Second-Order Nonlinearities in Microresonators.
Szabados J, Puzyrev DN, Minet Y, Reis L, Buse K, Villois A, Skryabin DV, Breunig I. Szabados J, et al. Phys Rev Lett. 2020 May 22;124(20):203902. doi: 10.1103/PhysRevLett.124.203902. Phys Rev Lett. 2020. PMID: 32501070
While the idea of generating combs this way has been around for almost two decades, so far only few demonstrations are known, based either on bulky bow-tie cavities or on relatively low-Q waveguide resonators. Here, we present the first such comb that is based on a millime …
While the idea of generating combs this way has been around for almost two decades, so far only few demonstrations are known, based either o …
Coherent 420 nm light generated by the cavity-enhanced four-wave mixing process in Rb vapor.
Yuan J, Liu H, Wang L, Xiao L, Jia S. Yuan J, et al. Opt Express. 2021 Feb 15;29(4):4858-4865. doi: 10.1364/OE.416307. Opt Express. 2021. PMID: 33726032 Free article.
We have generated a stable and continuously tunable single frequency (420 nm) coherent blue light (CBL) by the cavity-enhanced four-wave mixing process in Rb vapor. With the bow-tie-type ring cavity, the output power was 3.3 mW, two orders of magnitude higher than that of …
We have generated a stable and continuously tunable single frequency (420 nm) coherent blue light (CBL) by the cavity-enhanced four-wave mix …
Cavity-enhanced frequency doubling from 795nm to 397.5nm ultra-violet coherent radiation with PPKTP crystals in the low pump power regime.
Wen X, Han Y, Bai J, He J, Wang Y, Yang B, Wang J. Wen X, et al. Opt Express. 2014 Dec 29;22(26):32293-300. doi: 10.1364/OE.22.032293. Opt Express. 2014. PMID: 25607194 Free article.
We demonstrate a simple, compact and cost-efficient diode laser pumped frequency doubling system at 795 nm in the low power regime. In two configurations, a bow-tie four-mirror ring enhancement cavity with a PPKTP crystal inside and a semi-monolithic PPKTP enhancement cavi …
We demonstrate a simple, compact and cost-efficient diode laser pumped frequency doubling system at 795 nm in the low power regime. In two c …
Silicon Field Effect Transistor as the Nonlinear Detector for Terahertz Autocorellators.
Ikamas K, Nevinskas I, Krotkus A, Lisauskas A. Ikamas K, et al. Sensors (Basel). 2018 Nov 2;18(11):3735. doi: 10.3390/s18113735. Sensors (Basel). 2018. PMID: 30400183 Free PMC article.
This phenomenon can be exploited in a variety of experiments which exploit a nonlinear response, such as nonlinear autocorrelation measurements, for direct assessment of intrinsic response time using a pump-probe configuration or for indirect calibration of the oscillating …
This phenomenon can be exploited in a variety of experiments which exploit a nonlinear response, such as nonlinear autocorrelation measureme …
Unidirectional single-frequency operation of a continuous-wave Alexandrite ring laser with wavelength tunability.
Sheng X, Tawy G, Sathian J, Minassian A, Damzen MJ. Sheng X, et al. Opt Express. 2018 Nov 26;26(24):31129-31136. doi: 10.1364/OE.26.031129. Opt Express. 2018. PMID: 30650703 Free article.
We present in this work the first continuous-wave (CW) and single-frequency operation of a unidirectional diode-end-pumped Alexandrite ring laser with wavelength tunability. An ultra-compact bow-tie ring cavity is developed with astigmatic compensation and a novel 'displac …
We present in this work the first continuous-wave (CW) and single-frequency operation of a unidirectional diode-end-pumped Alexandrite ring …
20-mJ, sub-ps pulses at up to 70 W average power from a cryogenic Yb:YLF regenerative amplifier.
Demirbas U, Cankaya H, Hua Y, Thesinga J, Pergament M, Kärtner FX. Demirbas U, et al. Opt Express. 2020 Jan 20;28(2):2466-2479. doi: 10.1364/OE.384968. Opt Express. 2020. PMID: 32121936 Free article.
By employing a pump spot diameter of 2.1 mm, we could generate 20-mJ pulses at repetition rates between 1 Hz and 3.5 kHz, 10 mJ pulses at 5 kHz, 6.5 mJ pulses at 7.5 kHz and 5 mJ pulses at 10 kHz. The highest average power (70 W) was obtained at 3.5 kHz operation, at an ab …
By employing a pump spot diameter of 2.1 mm, we could generate 20-mJ pulses at repetition rates between 1 Hz and 3.5 kHz, 10 mJ pulse …
20 results