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List of works by Takeshi Ikegami

A beam reversal experiment for the estimation of microwave power shifts in an optically pumped Cs beam frequency standard

Accuracy of an optical parametric oscillator as an optical frequency divider

An Ultra-Stable Microwave Oscillator using a Cryogenic Sapphire Crystal Towards the Most Stable Oscillator on Earth

Analysis of Truncation Error for Dual-Mixer Time-Difference Measurement System Using Discrete Fourier Transformation

Atomic and molecular spectroscopy with a continuous-wave, doubly resonant, monolithic optical parametric oscillator

Atomic fountain clock with very high frequency stability employing a pulse-tube-cryocooled sapphire oscillator

scientific article

Autonomous cryogenic sapphire oscillators employing low vibration pulse-tube cryocoolers at NMIJ

article

Broadly tunable ultraviolet light generation in a compact MgO-doped periodically-poled stoichiometric lithium tantalate optical parametric oscillator with a high-Q cavity

scientific article

Cesium Atomic Fountain with Two-Dimensional Moving Molasses

Characteristics of a cw monolithic optical parametric oscillator

article published in 1998

Characteristics of an optically pumped Cs frequency standard at the NRLM

article by S.-I. Ohshima et al published April 1989 in IEEE Transactions on Instrumentation and Measurement

Characteristics of continuous-wave double-resonant optical parametric oscillators as spectroscopic tools

Continuous-wave RbTiOAsO4Optical Parametric Oscillator in Optical Frequency Interval Divider Scheme

DECIGO and DECIGO pathfinder

DECIGO pathfinder

DECIGO pathfinder

DECIGO: The Japanese space gravitational wave antenna

Dark resonance in bichromatic linearly polarized optical field on Cs D 1 line

Development of a frequency‐stabilized compact light source for an optically pumped Cs frequency standard

article

Development of an Intensity Stabilized Laser System with Frequency Offset of 9.2 GHz

article

Differential Temperature Controller for Stable Temperature Control of a Nonlinear Optical Crystal at Approximately 200°C

Doppler-free spectroscopy using a continuous-wave optical frequency synthesizer

scientific article published on 01 July 2006

External cavity diode laser with frequency drift following natural variation in air pressure

scientific article published on June 2015

External cavity diode laser with very-low frequency drift

Frequency Stabilization of Laser Diodes to the Cs-D2Line with the Zeeman Modulation Method

Frequency control of a chirped-mirror-dispersion-controlled mode-locked Ti:Al 2 O 3 laser for comparison between microwave and optical frequencies

Frequency measurement of accurate sidebands of an optical frequency comb generator

Generation of incoherent light from a laser diode subject to external optical injection from a superluminescent diode

scientific article

High-contrast dark resonances with linearly polarized light on the D_1 line of alkali atoms with large nuclear spin

scientific article published on 01 February 2009

Improved Frequency Measurement of the 1S0–3P0 Clock Transition in 87Sr Using a Cs Fountain Clock as a Transfer Oscillator

Influence of Electrochromic Damage of a KTiOPO4Crystal on a Phase-Locked CW Optical Parametric Oscillator

Influence of the Sampling Clock on the Precise Phase Noise Measurement

Laser cooling and trapping experiments for cesium atoms in NRLM

Light shifts in an optically pumped Cs beam frequency standard

Long Term Operation of a CW Doubly Resonant Optical Parametric Oscillator

Long-term, mode-hop-free operation of a continuous-wave, doubly resonant, monolithic optical parametric oscillator

Low-threshold and stable optical parametric oscillator for optical frequency division

Measuring the frequency of a Sr optical lattice clock using a 120 km coherent optical transfer.

scientific article published in March 2009

Microwave Local Oscillator for a Cesium Frequency Standard Synthesized from a Cryogenic Sapphire Oscillator

Mode-locked laser-type optical atomic clock with an optically pumped Cs gas cell

scientific article published on 01 May 2007

Monolithic cw optical parametric oscillators for optical frequency measurement

Numerical Simulation of Distributed Cavity Phase Shift in Atomic Fountain Frequency Standard

Optical Frequency Measurement Using Chirped-Mirror-Dispersion-Controlled Mode-Locked Ti:Al2O3Laser

Optical Frequency Synthesis From a Cryogenic Sapphire Oscillator Using a Fiber-Based Frequency Comb

Optical frequency link between an acetylene stabilized laser at 1542 nm and an Rb stabilized laser at 778 nm using a two-color mode-locked fiber laser

Phase locking of a continuous-wave optical parametric oscillator to an optical frequency comb for optical frequency synthesis

Phase-coherent optical frequency division by 3 of 532-nm laser light with a continuous-wave optical parametric oscillator.

scientific article

Preliminary Evaluation of the Cesium Fountain Primary Frequency Standard NMIJ-F2

Progress of the fountain frequency standard at NMIJ in 2008

scholarly article published April 2009

Proposal of a truncated atomic beam fountain for reduction of collisional frequency shift

Recent progress of an atomic fountain frequency standard NMIJ-F1 (2006 – 2007)

Reevaluation of the Optically Pumped Cesium Frequency Standard NRLM-4 With an H-Bend Ring Cavity

Reference Signal Synthesized from a Cryogenic Sapphire Oscillator Improved by Power Control Servo

Regeneratively mode-locked fiber laser with a repetition rate stability of 4.9x10-15 using a hydrogen maser phase-locked loop

scientific article

Short Term Frequency Stability Tests of Two Cryogenic Sapphire Oscillators

Signal with Flat Phase Noise Using a Carrier and the Power Spectral Density of White Noise for Phase Noise Standards

Space gravitational-wave antennas DECIGO and B-DECIGO

scientific article published on 7 May 2018

Surface activated room-temperature bonding in Ar gas ambient for MEMS encapsulation

The Japanese space gravitational wave antenna: DECIGO

The Japanese space gravitational wave antenna; DECIGO

The Japanese space gravitational wave antenna—DECIGO

The status of DECIGO

scientific article published in May 2017

Ultrastable cesium atomic clock with a 9.1926-GHz regeneratively mode-locked fiber laser

scientific article published in June 2005

Uncertainty Evaluation of $-$100-dBc/Hz Flat Phase Noise Standard at 10 MHz