Yb:YAG planar waveguide lasers grown by pulsed laser deposition: 70% slope efficiencies at 16 W of output power

Beecher, Stephen J.; Grant-Jacob, James; Parsonage, Tina L.; Hua, Ping-Rang; Mackenzie, Jacob I.; Shepherd, D.P.; Eason, R.W.

doi:10.1117/12.2220388

Cited by 2 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pyrometer is a remote sensing thermometer to measure the surface temperature of an object based on the amount of heat radiated [5]. A conventional pyrometer measures the surface temperature based on a single wavelength and surface emissivity.…”

Section: Introductionmentioning

confidence: 99%

The improvement design of two-colour pyrometry for pulsed laser deposition system

Liang

Mackenzie²,

Prentice³

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

In this work, we develop a digital pyrometry with an automatic control system. A two-colour pyrometer is applied to measure the substrate surface temperature in the pulsed laser dep-osition (PLD) system. A digital computer and two-colour photodetector are coupled to obtain the substrate surface temperature and the output signal from the respective detectors with high accuracy. These sets enable us to determine the substrate temperature during the process of deposition remotely and potentially allow us to develop control routines for maintaining a constant temperature throughout the process. The designed system has a broad spectral response range from 0.32 to 1.7μm and achieves a deficient full-scale temperature error of <1.8°C. Factors affecting the temperature measurements are studied to identify the sensor limitations, such as possible damage on the two-colour photodetectors, spectral losses, responsivity, and the distance between the photodetector end to the substrate. Finally, this pyrometric system is applied in the PLD process to maintain a stable substrate surface temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

The improvement design of two-colour pyrometry for pulsed laser deposition system

Liang

Mackenzie²,

Prentice³

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

944 mJ Nd:YAG planar waveguide laser amplifier with the optical to optical efficiency of 52%

Wang

Chen

et al. 2016

Opt. Express

View full text Add to dashboard Cite

We demonstrated a quasi-continuous wave (QCW) Nd:YAG planar waveguide laser amplifier with the single pulse output energy of 944 mJ. At the pulse repetition frequency (PRF) of 100 Hz, 1064 nm seed laser was coupled into the planar waveguide laser amplifier with the single pulse energy of 128 mJ and the pulse duration of 192 μs. With the total pump energy of 1582 mJ, the extracted energy of 816 mJ was obtained, leading to an optical to optical efficiency of 52% and an electrical to optical efficiency of 28%. To the best our knowledge, it is up to now the highest efficiency and output energy in Nd:YAG planar waveguide laser amplifier reported. At the maximum output, the beam quality factors M2 were measured to be 3.44 and 4.81 in the guided direction and unguided direction respectively, and the polarization degree was 98.6%. Higher average power could be obtained with the better performance of seeder oscillator.

show abstract

Yb:YAG planar waveguide lasers grown by pulsed laser deposition: 70% slope efficiencies at 16 W of output power

Cited by 2 publications

References 19 publications

The improvement design of two-colour pyrometry for pulsed laser deposition system

The improvement design of two-colour pyrometry for pulsed laser deposition system

944 mJ Nd:YAG planar waveguide laser amplifier with the optical to optical efficiency of 52%

Contact Info

Product

Resources

About