Cr: Colquiriite Lasers: Current status and challenges for further progress

U Demirbas - Progress in quantum electronics, 2019 - Elsevier
Abstract Cr: Colquiriite laser materials (Cr: LiCAF, Cr: LiSAF, Cr: LiSGaF) own broad
absorption bands in the visible region that allow direct-diode pumping by well-developed …

Multiphonon-assisted lasing beyond the fluorescence spectrum

F Liang, C He, D Lu, Q Fang, Y Fu, H Yu, H Zhang… - Nature Physics, 2022 - nature.com
Lasing typically starts from fluorescence, and the laser wavelength is therefore limited to the
fluorescence spectrum of the gain material. Accessing wavelengths beyond this intrinsic …

Divalent (Cr2+), trivalent (Cr3+), and tetravalent (Cr4+) chromium ion-doped tunable solid-state lasers operating in the near and mid-infrared spectral regions

A Sennaroglu, Y Morova - Applied Physics B, 2022 - Springer
The chromium ion is among the most widely explored and used laser-active ions.
Depending on the charge state of the laser-active chromium ion in the host, tunable …

Off-surface optic axis birefringent filters for smooth tuning of broadband lasers

U Demırbas - Applied optics, 2017 - opg.optica.org
Transition metal-doped gain media, such as Ce: LiCAF, Ti: sapphire, Cr: ZnSe, and Fe:
ZnSe, possess wide gain bandwidths that could provide ultra broadly tunable laser output …

Detailed investigation of absorption, emission and gain in Yb: YLF in the 78–300 K range

U Demirbas, J Thesinga, M Kellert… - Optical Materials …, 2021 - opg.optica.org
We present spectroscopic measurements focusing on a detailed investigation of
temperature dependence of absorption, emission and gain in the uniaxial Yb: YLF laser gain …

Temperature dependence of the emission cross-section and fluorescence lifetime in Cr: LiCAF, Cr: LiSAF, and Cr: LiSGaF between 78 K and 618 K

S Okuyucu, J Thesinga, H Tanaka, Y Ozturk… - Optical Materials …, 2023 - opg.optica.org
Cr: Colquiriites (Cr: LiCAF, Cr: LiSAF, and Cr: LiSGaF) are well-known for their broad
emission bands in the near-infrared region. Unfortunately, due to their relatively weak …

Multicolor lasers using birefringent filters: experimental demonstration with Cr: Nd: GSGG and Cr: LiSAF

U Demirbas, R Uecker, JG Fujimoto, A Leitenstorfer - Optics express, 2017 - opg.optica.org
In this study, we numerically and experimentally investigate application of birefringent filters
(BRFs) as frequency selective elements in multicolor lasers. A BRF plate made out of …

Generation of sub-20-fs pulses from a graphene mode-locked laser

F Canbaz, N Kakenov, C Kocabas, U Demırbas… - Optics …, 2017 - opg.optica.org
We demonstrate, what is to our knowledge, the shortest pulses directly generated to date
from a solid-state laser, mode locked with a graphene saturable absorber (GSA). In the …

Temperature-tunable UV generation using an alexandrite laser and PPLN waveguides

G Tawy, N Palomar Davidson, G Churchill… - Optics …, 2023 - opg.optica.org
We present a simple and novel technique for achieving ultra-violet (UV) wavelength-tunable
laser operation in the continuous-wave regime. Wavelength tunable operation in the near …

High-power 7.4W TEM00 and wavelength-tunable alexandrite laser with a novel cavity design and efficient fibre-coupled diode-pumping

G Tawy, A Minassian, MJ Damzen - OSA Continuum, 2020 - opg.optica.org
We report significant improvement in the performance of TEM_00 alexandrite laser
operation by employing high power fibre-coupled red diode pumping, novel cavity design …