Second harmonic 423-nm laser generated by BIBO crystal for calcium optical frequency standard
Calcium is one prospective element for the modern optical frequency standard. The 423-nm transition line of calcium atoms has been widely used in laser slowing and laser cooling, the precise spectrum measurement, and the magnetic optical trapping (MOT). However, there is no any available commercial
A robust method for frequency stabilization of 556-nm laser operating at the intercombination transition of ytterbium2021-02-21
A 556-nm laser light using a single-pass second harmonic generation (SHG) is obtained in a periodically poled MgO:LiNbO3 (PPLN) crystal pumped by a fiber laser at 1111.6 nm. A robust frequency ...
An Harmonic Mode-Locked Er-Doped Fiber Laser by the Evanescent Field-Based MXene Ti3C2Tx (T = F, O, or OH) Saturable Absorber2021-02-08
An Harmonic Mode-Locked Er-Doped Fiber Laser by the Evanescent Field-Based MXene Ti3C2Tx (T = F, O, or OH) Saturable Absorber
High-power near diffraction-limited 1 064-nm Nd:YAG rod laser and second harmonic generation by intracavity-frequency-doubling2021-02-09
We present a near diffraction-limited 1 064-nm Nd:YAG rod laser with output power of 82.3W(M2 \approx 1.38). The power fluctuation over two hours is better than \pm 1.1%. Pulsed 1 064-nm laser with an...
Theoretical Calculation of Third Harmonic Generation in Gas-filled Cylinder Capillary by Femto-second Laser Pulses2019-12-30
Quadruple-frequency millimeter-wave generation using second-order rational harmonic mode-locking technique2021-02-26
A novel method for generating quadruple-frequency millimeter-wave (MMW) by using an actively mode-locked fiber ring laser is proposed and demonstrated. In this approach, the optical Mach-Zehnder ...
Sixth harmonic generation of 1064-nm laser in KBBF prism coupling devices under two kinds of gas conditions2021-02-10
The conversion efficiency on the sixth harmonic of 1064 nm in KBe2BO3F2 (KBBF) at different gas pressures in two kinds of gases, helium and nitrogen, is measured and compared. In the both gases, ...
High power red laser generation by second harmonic generation with GTR-KTP crystal2021-02-04
In this Letter, a gray-tracking-resistant—potassium titanyl phosphate (GTR-KTP) crystal is used for intracavity frequency doubling red laser generation for the first time. Under the 808 nm LD pump ...
Self-starting harmonic mode-locked Tm-Bi co-doped germanate f iber laser with carbon nanotube-based saturable absorber2021-02-12
We report a ring cavity passively harmonic mode-locked fiber laser using a newly developed thuliumbismuth co-doped fiber (TBF) as a gain medium in conjunction with a carbon nanotube (CNT)-based ...
Bound states of solitons in a harmonic graphene-mode-locked fiber laser2021-02-06
By simply increasing the pump power, the laser can also generate harmonic mode-locking with harmonics up to the 26th order (409.6 MHz repetition rate). This is a simple, low-cost, all-fiber, ...
Effective generation of optical quadruple frequency millimeter-wave based on fiber laser using injection rational harmonic mode-locked technique2021-02-10
A method to generate the optical quadruple frequency millimeter-wave with high power efficiency is proposed and demonstrated based on the combination of the injection 2nd-order rational harmonic mode-...
20-kHz watt-level green laser with LGS crystal electro-optic Q-switch2021-02-10
A diode-end-pumped electro-optic ... (LBO) is used as the nonlinear crystal in the second harmonic generation. The 2.3-Waverage power of 532-nm green laser is obtained at the repetition rate of 20 kHz w
Mid-infrared second-harmonic generation in chalcogenide photonic crystal fiber2021-02-11
Mid-infrared second-harmonic generation in chalcogenide photonic crystal fiber
Transferring the stability of iodine-stabilized diode laser at 634 nm to radio frequency by an optical frequency comb2021-02-10
An optical frequency comb phase-locked on an iodine frequency stabilized diode laser at 634 nm is constructed to transfer the accuracy and stability from the optical domain to the radio frequency ...
Control of soft X-ray high harmonic spectrum by using two-color laser pulses2021-01-27
We demonstrate the suppression of soft X-ray high harmonics generated by two-color laser pulses interacting with Ne gas in a gas cell. We show that harmonic suppression can occur at the proper ...
Spherical Harmonic lighting (SH lighting) is a technique for calculating the lighting on 3D models from area light sources that allows us to capture, relight and display global illumination style ...
33 W continuous-wave single-frequency green laser by frequency doubling of a single-mode YDFA2021-02-04
A high power continuous-wave single-frequency green fiber laser by second-harmonic generation of a Yb-doped fiber amplifier (YDFA) is developed. A linearly polarized single-mode fiber amplifier ...
Measuring ultrashort optical pulses using multi-shot second harmonic generation frequency resolved optical gating2021-02-10
Frequency resolved optical gating (FROG), is an effective technique for characterizing the ultrafast laser pulses. The multi-shot second harmonic generation (SHG) FROG is the most sensitive one in ...
Second-harmonic Generation of Phase Aberrated Laser Beams in Chirped Period-poled Lithium Niobate2021-02-08
We propose a simple means for improving optical beam quality with second-harmonic generation. By creating spatial walk-off in aperiodic quasi-phase-matching gratings, we show that the harmonic beam ...