Laser Diode-Pumped Continuous-Wave Mode-Locked Yb,NaCaF2Laser

In this paper, diode pumped solid state (DPSS) lasers based on end-pumping series N d : Y V O 4 and N d : G d V O 4 crystals were studied. Dual-, tri-, and quad-wavelength emissions were achieved. In the dual-wavelength emission operation, an optical-to-optical efficiency (O-O) of 48.9% and the power instability was 0.4% were obtained. These are the most efficient and compact lasers operating in continuous wave mode reported to date with series crystals. Besides this, the effect of changing power ratio between the output laser powers on speckle reduction was investigated for the first time. In addition, tri and quad wavelength emissions were achieved with a reasonable efficiency simply by optimizing the cavity parameters.

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Continuous-wave mode-locked Nd:glass laser pumped by a laser diode

Optics Letters ◽

10.1364/ol.13.000458 ◽

1988 ◽

Vol 13 (6) ◽

pp. 458 ◽

Cited By ~ 49

Author(s):

Santanu Basu ◽

Robert L. Byer

Keyword(s):

Laser Diode ◽

Continuous Wave ◽

Wave Mode ◽

Continuous Wave Mode ◽

Nd:Glass Laser

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Generation of subpicosecond pulses from a continuous-wave mode-locked Nd:YAG laser using a two-stage optical compression technique

Optics Letters ◽

10.1364/ol.10.000338 ◽

1985 ◽

Vol 10 (7) ◽

pp. 338 ◽

Cited By ~ 25

Author(s):

A. S. L. Gomes ◽

W. Sibbett ◽

J. R. Taylor

Keyword(s):

Nd:Yag Laser ◽

Continuous Wave ◽

Wave Mode ◽

Two Stage ◽

Compression Technique ◽

Subpicosecond Pulses ◽

Continuous Wave Mode

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Standoff Detection of Oil and Powder Mixtures at 12 Meters Using a Tunable Quantum Cascade Laser-Based System with a Close Focus Telescope and Uncooled Infrared Detector

Applied Spectroscopy ◽

10.1177/00037028211060389 ◽

2021 ◽

pp. 000370282110603

Author(s):

J. Chance Carter ◽

Phillip H. Paul ◽

Joshua M. Ottaway ◽

Peter Haugen ◽

Anastacia M. Manuel

Keyword(s):

Quantum Cascade Laser ◽

Continuous Wave ◽

Infrared Detector ◽

Wave Mode ◽

Infrared Source ◽

Powder Mixtures ◽

Quantum Cascade ◽

System A ◽

Continuous Wave Mode ◽

Lock In

We have designed and demonstrated a quantum cascade laser (QCL) based standoff system that utilizes an uncooled mercury cadmium telluride (MCT) detector with lock-in signal processing for chemical identification at a distance of 12.5 meters in indoor ambient light conditions. In the system, a tunable quad-QCL operating (1 MHz) in quasi-continuous wave mode between 8.45 and 10.03 μm (∼1182 to 1000 cm−1) serves as the active mid-infrared source for remotely interrogating mineral, powder, and thin film oil samples including powder mixtures (6, 12.5, 25, and 50%) of crystalline quartz (SiO2) in KBr. Light as reflected from a given sample is collected using a 10-inch (25.4 cm) Dall Kirkham telescope and coupled with ZnSe optics to an uncooled MCT detector. The mixture dependence of the highly transparent KBr and strongly absorbing quartz was found to fit a modified version of the Schatz reflectance model for compacted powder mixtures. All reflectance spectra reported are relative to an Au-coated diffuse reflector. A NIST traceable polystyrene standard reflector was also used to determine the QCL wavelength tuning range and calibration.

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Stable continuous-wave mode-locked laser from a 1645 nm Er:YAG ceramic oscillator

Applied Physics Express ◽

10.35848/1882-0786/ac481c ◽

2022 ◽

Author(s):

Yangyu Liu ◽

Xue Cao ◽

AnHua Xian ◽

Guangmiao Liu ◽

Wei zhou ◽

...

Keyword(s):

Solid State ◽

Pulse Width ◽

Peak Power ◽

Continuous Wave ◽

Modulation Depth ◽

Average Power ◽

Mode Locking ◽

Wave Mode ◽

Semiconductor Saturable Absorber ◽

Continuous Wave Mode

Abstract We demonstrate stable continuous-wave mode-locking (CWML) pulses around 1645nm by employing the home-made Er:YAG ceramic. By using a fiber laser and semiconductor saturable absorber mirror (SESAM) with modulation depth of 1.2%, we get ML pulses with the output average power up to 815 mW, the pulse width shortened as ~4 ps, and the peak power of 1.8 kW. With the SESAM of modulation depth of 2.4%, the second-order harmonic ML pulses were also obtained. As far as we know, this is the first report of CWML from Er3+-doped ceramics and also the shortest pulse duration in Er3+-doped solid-state oscillators.

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