Flashlamp-pumped laser performance of LiCaAIF6:Cr3+

Payne, Stephen A.; Chase, L. L.; Smith, L. K.; Chai, B. H. T.

doi:10.1007/bf02089014

Cited by 23 publications

(4 citation statements)

References 30 publications

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“…All of these gain media can be pumped by low-cost red laser diodes around 640 nm, and provide broadly tunable lasing in a spectral region similar to Ti:Sapphire [40,[49][50][51][52][53]. The measured emission spectrum curves of Cr:LiSAF and Cr:LiCAF also match relatively well the emission spectra provided in literature [54,55], confirming the spectral calibration of the measurement system within the measurement error bars. Note that, a second InGaAs detector was used for the measurement of emission cross section of Cr:LiSAF above 950 nm (the curves are combined electronically around a wavelength of 960 nm).…”

Section: Normalized Emission Cross Section Curvessupporting

confidence: 74%

Temperature dependence of Alexandrite effective emission cross section and small signal gain over the 25-450 °C range

Demırbas¹,

Sennaroğlu²,

Kärtner³

2019

Opt. Mater. Express

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We present detailed measurements of effective emission cross section spectra of the Alexandrite gain medium in the 25-450°C temperature range and provide analytic formulas that can be used to match the measured spectra. The measurement results have been used to investigate the wavelength and temperature dependence of small signal gain, as well as gain bandwidth relevant for ultrafast pulse generation/amplification. We show that the estimated laser performance based on the measured spectroscopic data provides a good fit to the results in the literature. We further discuss the need for a detailed measurement of excited-state absorption cross section in future studies.

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Section: Normalized Emission Cross Section Curvessupporting

confidence: 74%

Temperature dependence of Alexandrite effective emission cross section and small signal gain over the 25-450 °C range

Demırbas¹,

Sennaroğlu²,

Kärtner³

2019

Opt. Mater. Express

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“…In this work, we focus our attention on Cr:Colquiriites, which attracted a renewed interest over the last 2 decades, due to the brightness improvement observed in LED (light-emitting diode) and laser diode pump sources. Strong electron-phonon coupling creates three intense and broad absorption bands in Cr:Colquiriite gain media that are centered around 275 nm, 445 nm, and 640 nm [10,17]. The 640 nm transition ( 4 A2 to 4 T2 excitation) has a full-width-half-maximum (FWHM) approaching 100 nm, and it is strong both for the E//a and E//c axis in the uniaxial Cr:Colquiriite crystals.…”

Section: Introductionmentioning

confidence: 99%

Passively Q-switched Cr:LiCAF laser with a saturable Bragg reflector

2021

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We present a low-cost multimode diode-pumped passively-Q-switched Cr:LiCAF laser operating near 800 nm. AlGaAs based saturable Bragg reflectors (SBRs) were used for passive Q-switching. The system is experimentally characterized in detail by using four different output couplers and two SBRs with different modulation depths. Pulse widths in the 1.5-4 µs range at repetition rates between 18-40 kHz were achieved with average powers up to 125 mW. The experimentally obtained results are compared with basic Q-switching theory and further performance improvement in terms of pulse length shortening and peak power scaling is elaborated.

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“…The structure and properties of LiCaAlF 6 crystals and of related colquiriite-type fluorides have been described in several papers (e.g. by VIEBAHN 1971, YIN et al 1991, RUPP et al 1993, PAYNE et al 1988, PAYNE et al 1989, PAYNE et al 1990). …”

Section: Introductionmentioning

confidence: 99%