Macquarie University, Sydney Macquarie University ResearchOnline

Showing items 1 - 15 of 17.

Add to Quick Collection   All 17 Results

Sort:
 Add All Items to Quick Collection
Date: 2015
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/1062588
Description: Factors affecting the output efficiency of an external cavity quasi-cw KYW Raman laser were investigated. We show that a major limit to efficiency, in addition to thermal effects, results from a casca ... More
Reviewed: Reviewed
Date: 2015
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/1062509
Description: Defect induced stress birefringence in CVD grown diamond has been investigated using Metripol and Mueller polarimetry. Optical rotation was observed, up to a maximum of 280 through an 8 mm long diamon ... More
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/327832
Description: Scientists are using high-purity synthetic diamonds to create novel devices that offer increased laser power, brightness and wavelength reach.
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/321159
Description: We report an investigation into a double metal tungstate Raman laser when pumped at elevated average powers. Potassium gadolinium tungstate (KGW) was placed in an external cavity configured for second ... More
Full Text: Full Text
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/321530
Description: Quasi-cw pumping is used to investigate the high-power characteristics of cw beam conversion in diamond Raman lasers (DRLs). We show that thermal gradients establish in DRLs at approximately 50 μs for ... More
Full Text: Full Text
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/345865
Description: We demonstrate Raman beam combining of three incoherent beams in diamond using a non-collinear pump geometry. At the kilowatt peak power level, more than 70% of each beam is converted to the Stokes be ... More
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/345842
Description: We present an analytical steady-state model of an external cavity Raman laser.We use this model to optimise a quasi-cw pumped diamond Raman laser with 23Wof steady-state Stokes power in 30 ms pulses.
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/306146
Description: Brightness enhancement in an external cavity diamond Raman laser designed for high power conversion of a neodymium (1064 nm) laser to the eye-safe spectral region is reported. Using a multimode input ... More
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/321191
Description: The transient thermal lens in a high-average power double metal tungstate Raman laser has been investigated. An external cavity potassium gadolinium tungstate (KGW) laser designed for second-Stokes ou ... More
Full Text: Full Text
Reviewed: Reviewed
Date: 2013
Subject Keyword: 020500 Optical Physics
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/278378
Description: Efficient operation of a pulsed diamond Raman laser at output powers up to 14.5 W is reported. An external-cavity Raman resonator 2.5 cm long employing a low-loss CVD diamond 9.5 mm long generated fir ... More
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/288149
Description: By controlling the size of Yb,Er, doped upconversion nanoparticles, we obtain varying emission lifetimes and emission ratios of green and red light, which we explain by modelling of excited state deca ... More
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/271171
Description: Lanthanide luminescence is presented in full spectral and temporal detail by challenging the limits of low-light sensing and high-speed data acquisition. A robust system is demonstrated, capable of co ... More
Reviewed: Reviewed
Date: 2013
Subject Keyword: 020500 Optical Physics
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/285291
Description: Diamond is a highly attractive laser material due to its exceptional optical and thermal properties. Its high thermal conductivity, low thermal expansion and wide transparency are especially suitable ... More
Reviewed: Reviewed
Date: 2012
Subject Keyword: 020500 Optical Physics
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/184405
Description: We demonstrate continuous-wave (cw) operation of a diamond Raman laser at 1240 nm in an external cavity configuration. The output power increased linearly with pump power with a 49.7% slope efficiency ... More
Full Text: Full Text
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/217205
Description: We report external cavity Raman lasers using a 9.5-mm-long low-loss CVD diamond pumped by a 35 W q-switched Nd:YVO4 laser with approximately 22 ns pulses at 36 kHz pulse repetition frequency. Two syst ... More
Full Text: Full Text
Reviewed: Reviewed