Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH301:11

ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3

7.5K
All ortho–para directors, excluding halogens, are activating groups. These groups donate electrons to the ring, making the ring carbons electron-rich. Consequently, the reactivity of the aromatic ring towards electrophilic substitution increases. For instance, the nitration of anisole is about 10,000 times faster than the nitration of benzene. The electron-donating effect of the methoxy group in anisole activates the ortho and para positions on the ring and stabilizes the corresponding...
7.5K
Self-Locking Screw01:16

Self-Locking Screw

2.5K
A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
2.5K
What is a Mode?01:07

What is a Mode?

26.5K
The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...
26.5K
Passive Filters01:27

Passive Filters

1.0K
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
1.0K
Lysogenic Cycle of Bacteriophages00:43

Lysogenic Cycle of Bacteriophages

68.1K
In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
68.1K
Ventilatory Modes01:14

Ventilatory Modes

1.6K
Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure.
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
1.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Enhanced resolution optoacoustic microscopy using a picosecond high repetition rate Q-switched microchip laser.

Journal of biomedical optics·2022
Same author

Edge-enhanced optical parametric generation in periodically poled LiNbO<sub>3</sub>.

Optics express·2020
Same author

1.34  μm VECSEL mode-locked with a GaSb-based SESAM.

Optics letters·2018
Same author

Ho:KY(WO<sub>4</sub>)<sub>2</sub> thin-disk laser passively Q-switched by a GaSb-based SESAM.

Optics express·2018
Same author

87  fs mode-locked Tm,Ho:CaYAlO<sub>4</sub> laser at ∼2043  nm.

Optics letters·2018
Same author

Sub-50 ps pulses at 620 nm obtained from frequency doubled 1240 nm diamond Raman laser.

Optics express·2017

Related Experiment Video

Updated: Feb 11, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

11.9K

Sub-10 optical-cycle passively mode-locked Tm:(Lu2/3Sc1/3)2O3 ceramic laser at 2 µm.

Yicheng Wang, Wei Jing, Pavel Loiko

    Optics Express
    |May 3, 2018
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates a thulium-doped ceramic laser, mode-locked using a semiconductor saturable absorber, achieving ultrashort pulses near 2 µm. Researchers generated 63 fs pulses, showcasing potential for advanced laser applications.

    More Related Videos

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
    08:48

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

    Published on: November 22, 2019

    8.0K
    Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
    11:07

    Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

    Published on: August 15, 2015

    10.4K

    Related Experiment Videos

    Last Updated: Feb 11, 2026

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
    14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

    11.9K
    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
    08:48

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

    Published on: November 22, 2019

    8.0K
    Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
    11:07

    Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

    Published on: August 15, 2015

    10.4K

    Area of Science:

    • Laser Physics
    • Materials Science
    • Quantum Optics

    Background:

    • Thulium (Tm)-doped mixed sesquioxide ceramics are promising gain media for mid-infrared lasers.
    • Mode-locking near 2 µm is crucial for various spectroscopic and nonlinear optical applications.
    • Semiconductor saturable absorbers offer efficient and compact solutions for generating ultrashort laser pulses.

    Purpose of the Study:

    • To achieve mode-locked operation of a Tm-doped mixed sesquioxide ceramic laser near 2 µm.
    • To investigate the generation of ultrashort pulses using a semiconductor saturable absorber.
    • To optimize pulse duration and output power by adjusting the output coupler reflectivity.

    Main Methods:

    • Mode-locking a Tm-doped mixed sesquioxide ceramic laser using an Indium Gallium Arsenide Antimonide (InGaAsSb) quantum-well semiconductor saturable absorber.
    • Employing chirped mirrors for dispersion compensation within the laser cavity.
    • Varying the output coupler reflectivity (3% and 0.2%) to study its effect on pulse characteristics.

    Main Results:

    • Achieved mode-locked operation at approximately 2 µm with a maximum average output power of 175 mW and a pulse duration of 230 fs using a 3% output coupler.
    • Generated pulses as short as 63 fs at 2.057 µm by employing a 0.2% output coupler.
    • Demonstrated the effectiveness of the InGaAsSb saturable absorber and dispersion compensation for ultrashort pulse generation.

    Conclusions:

    • The Tm-doped mixed sesquioxide ceramic laser is capable of generating ultrashort pulses near 2 µm.
    • The use of InGaAsSb quantum-well saturable absorbers and chirped mirrors is effective for mode-locking and dispersion management.
    • Further optimization of output coupler reflectivity can lead to shorter pulse durations.