Multifrequency laser emission generated by two-color stimulated Raman effect using a single-frequency laser beam and a dye-Raman composite resonator

The nonlinear scaling of complexity with the increased number of components in integrated photonics is a major obstacle impeding large-scale, phase-locked laser arrays. Here, we develop a higher-dimensional supersymmetry formalism for precise mode control and nonlinear power scaling. Our supersymmetric microlaser arrays feature phase-locked coherence and synchronization of all of the evanescently coupled microring lasers—collectively oscillating in the fundamental transverse supermode—which enables high-radiance, small-divergence, and single-frequency laser emission with a two-orders-of-magnitude enhancement in energy density. We also demonstrate the feasibility of structuring high-radiance vortex laser beams, which enhance the laser performance by taking full advantage of spatial degrees of freedom of light. Our approach provides a route for designing large-scale integrated photonic systems in both classical and quantum regimes.

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B2Σ+ state lifetime in CO+

Canadian Journal of Physics ◽

10.1139/p97-051 ◽

1998 ◽

Vol 76 (1) ◽

pp. 39-46 ◽

Cited By ~ 1

Author(s):

T J Scholl ◽

S D Rosner ◽

R A Holt

Keyword(s):

Laser Beam ◽

Systematic Error ◽

Laser Induced Fluorescence ◽

Single Frequency ◽

Laser Method ◽

Negative Band ◽

Beam Laser ◽

Excitation Region ◽

Frequency Laser

We measured the lifetime of the B2Σ+, v = 0 level of the astrophysically important CO+ molecule by applying the collinear beam-laser method. Ions in the long-lived A2Π level were excited to the B2Σ+ state by a single-frequency laser beam in resonance with a transition in the B2Σ+ A2Π BaldetJohnson band, and the laser-induced fluorescence from the B2Σ+ X2Σ+ First Negative band was monitored as a function of distance from the excitation region. We claim that our result of 54.9 ± 0.7 ns is less likely to have suffered from systematic error than previous measurements, which were mutually discordant. PACS No. 33.70Ca

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Low noise 400 W coherently combined single frequency laser beam for next generation gravitational wave detectors

Optics Express ◽

10.1364/oe.420350 ◽

2021 ◽

Vol 29 (7) ◽

pp. 10140

Author(s):

Felix Wellmann ◽

Nina Bode ◽

Peter Wessels ◽

Ludger Overmeyer ◽

Jörg Neumann ◽

...

Keyword(s):

Laser Beam ◽

Gravitational Wave ◽

Low Noise ◽

Single Frequency ◽

Next Generation ◽

Gravitational Wave Detectors ◽

Frequency Laser

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MXene Core-Shell Nanosheets: Facile Synthesis, Optical Properties, and Versatile Photonics Applications

Nanomaterials ◽

10.3390/nano11081995 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1995

Author(s):

Yunjia Wang ◽

Shunxiang Liu ◽

Feng Zhu ◽

Yiyu Gan ◽

Qiao Wen

Keyword(s):

Gold Nanoparticles ◽

Research Work ◽

Mode Locking ◽

Single Frequency ◽

Core Shell ◽

Complex Structures ◽

Facile Synthesis ◽

Laser Applications ◽

Saturable Absorbers ◽

Frequency Laser

In recent years, the transition metal carbonitrides(MXenes) have been widely applied to photoelectric field, and better performance of these applications was achieved via MXene complex structures. In our work, we proposed a MXene core-shell nanosheet composed of a Ti2C (MXene) phase and gold nanoparticles, and applied it to mode-locked and single-frequency fiber laser applications. The optoelectronic results suggested that the performances of these two applications were both improved when MXene core-shell nanosheets were applied. As a result, we obtained a mode-locking operation with 670 fs pulses, and the threshold pump power reached to as low as 20 mW. Besides, a single-frequency laser with the narrowest linewidth of ~1 kHz is also demonstrated experimentally. Our research work proved that MXene core-shell nanosheets could be used as saturable absorbers (SAs) to promote versatile photonic applications.

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