PURPOSE To describe and test a method for assessment of the monkey retinal nerve fiber layer (RNFL) with scanning laser polarimetry. METHODS A scanning laser polarimeter was modified to accommodate a variable corneal polarization compensator. Corneal polarization magnitude (CPM) and corneal polarization axis (CPA) of the anterior segment birefringence of normal and glaucomatous cynomolgus mon...

The thermal-birefringence effect in Nd(3+) -doped YAG ceramics has been investigated. The amount of depolarization induced by thermal birefringence in Nd:YAG ceramics is nearly the same as that in (111)-cut single crystals at the same Nd(3+) concentration. However, depolarization becomes larger as the Nd(3+) concentration increases, even at the same absorbed pump power.

New cumulative effects in laser-induced birefringence have been observed under 10Hz-pulse-repetition-rate, nanosecond-duration laser irradiation of azo-dye-doped planarnematic liquid crystal layers at incident intensities I ∼ 1–10 MW/cm2. An irradiation geometry with the incident polarization parallel to the nematic director was used. This geometry does not permit a first-order electric field i...

The birefringence of a low-loss, high-reflectance coating applied to an 8-cm-diameter sapphire crystal grown in the m-axis direction has been mapped. By monitoring the transmission of a high-finesse Fabry-Perot cavity as a function of the polarization of the input light, we find an upper limit for the magnitude of the birefringence of 2.5 x 10(-4) rad and an upper limit in the variation in dire...

We report on the first (to our knowledge) demonstration of nonlinear dual-frequency-comb spectroscopy. In multi-heterodyne femtosecond Raman-induced Kerr-effect spectroscopy, the Raman gain resulting from the coherent excitation of molecular vibrations by a spectrally narrow pump is imprinted onto the femtosecond laser frequency comb probe spectrum. The birefringence signal induced by the nonli...

Self-tuning optical systems are of growing importance in technological applications such as mode-locked fiber lasers. Such self-tuning paradigms require intelligent algorithms capable of inferring approximate models of the underlying physics and discovering appropriate control laws in order to maintain robust performance for a given objective. In this work, we demonstrate the first integration ...

We report a robust method of stabilizing laser to the frequency an atomic transition using hollow cathode lamp. In contrast standard dichroic vapor lock (DAVLL) method, which uses dichroism induced by longitudinal magnetic field, we employ birefringence transversal field. applied this $(5s^2)\ {}^{1}S_{0} - (5s5p)\ {}^{1}P_{1}$ (461 nm) Sr. Although is made ferromagnetic material, successfully ...

A long-standing prediction of quantum electrodynamics, yet to be experimentally observed, is the interaction between real photons in vacuum. As a consequence of this interaction, the vacuum is expected to become birefringent and dichroic if a strong laser field polarizes its virtual particle-antiparticle dipoles. Here, we derive how a generally polarized probe photon beam is influenced by both ...

The generation of a 33.7 W radially polarized output is demonstrated by way double-pass amplification in Ho:YAG thin-slab crystal. amplifier system was seeded with the beam from continuous-wave 13.2 W, 2.1 µm rod laser, which exploited gain medium bifocusing and ring-shaped pump spot to promote preferential lasing on Laguerre–Gaussian mode. By compensating for both thermally induced stress bire...